you facilitating a  HJ is a father-son bonding moment, but you may have a different relationship with your dad than I do.  If your mom finds out, is she going to blame you or him?  And does she own a firearm?

I have a pretty unbreakable relationship with my dad and it's really not about bonding. I just want to see a genuine smile on the guy's face. My mom and dad don't have a very loving relationship and I just think he deserves some relaxation for keeping the family together all these years. He is the hardest working dude I know...

I'm on both ends of this: I never did this with/for my father, and if my son tried to do it with/for me I'd castrate him 😧

My $02

Is it possible he would be offended over this offer and harm your relationship?  
He also may enjoy it so much he could continue on and harm his
Marriage.  Not knowing the players involved I would leave it alone. It is usually
The dad that does this for the son....,

1: It blows up in your face and he is embarrassed as hell, yells and screams and tells your Mum all about your bad judgement.

2: He quietly enjoys himself.

3: He walks out with a big smile on his face saying " I better hurry up and write that review before my appointment with my ATF tomorrow. ".

I'd have The Talk with the young whipper-snapper first.

Your dad, I mean.  I'm trying to think how I'd react if one of my sons brought this subject up.  Maybe first mention he seems stressed out, and what would he think about getting a massage while on your weekend getaway.  (Some guys don't even like therapeutic massages.)  If he's ok with that, talk casually about massage experiences, eg "Have you ever had a massage where the masseuse massaged, well, EVERYTHING? (Wink)". His reaction and follow-on conversation should give you an idea if he's open to FBSM.  

You know your dad so you can probably improve on my sample dialogue, but general idea is to sound him out about it first.  

For all you know, he might have been seeing providers for years.  

So if they want to get laid they'll be coming to me, not the other way 'round.

I don't think buying your dad a surprise handy is going to go over well.

That said, you might be able to arrange for a scantily clad CMT massage with no extras.

And it was unplanned.I was in Vegas with my son, and we were party at the night club Surrender. Young ladies were actually hitting on me, although I thought they were pros because of the lingo they used gave it away. My son's friend were egging me on this hook up but because my son was there, I felt it to be inappropriate to pursue these girls so I passed..so what I'm trying to say is why put your old man through this? It might be awkward for him. If he wants to get laid, believe me, he'll find away.

Ask the question if "your not an American" but want American input??? I'm calling BS on this tread

How are you going to get your dad screened?

Where you both feel comfortable enough to sense each other's wants? How do you know that he is not content with a non-sensual lifestyle? Does he complain to you? I am hoping this won't backfire on you.

find a bar,  preferably a sports bar, that has an afternoon lingerie show and start there

I'd say most people would consider that weird, I think the real question is whether the weirdness is an issue.  

I don't think anyone is necessarily up for receiving any sexual act for pay/from a stranger so I'd make sure your dad has expressed any sort of feeling about this.

in fact i had some date like that some time ago, a guy who lost his wife and for long time he refused to had dates with other ladies, his son bring him to Spain for a short vacation and he had a great time here  
Just be sure that your dad will be confortable with this date.

I think there is nothing weird about it. I mean maybe talk to him and bring up something that may relate to the subject and ask him his take on it. If it sounds like he is not up for something like that don't bother but if it sparks his interest let him give it a try and you set everything up. I actually think he may love something like this and enjoy if very much. Or even being in the company of a beautiful women. Good luck.

And that's just me Personally. Me and my Dad were as close as any could be, yet for me it would have been extremely awkward. Well actually not because I wouldn't have.  

Weird to me, yeah. Weird for you? You're the only one who can truly answer that.

As others have noted it all depends.  Have you gone with him to a strip club before?  Might want to do that first.  Is he going through a divorce?  You seem to be assuming a lot.  Are you assuming or do you know based on open discussions?  What is his unmet need?