My usual opportunities to play are between the hours of 9 AM and 12 noon so one of my favorite alibis to escape to the fantasy world is to use the excuse of going on an extended bicycle ride.  I pump the tires on my road bike, don a clean kit-bib shorts, jersey and socks-and catch the Coaster to San Diego.  From Old Town or the Santa Fe depot it'll be a 5-10 minute leisurely ride to the rendezvous lair.   With room number in hand, I head directly to the elevators, as if I own the place, and am soon greeted with a glowing smile, warm lips, and a hand on the chamois of my shorts.  At the end of the date, the pedal back home provides ample opportunity to bask in the glow of sensuality and torrid sex; far better than if I were to be fighting traffic on I-5.
What's your favorite "get out of the real world" alibi?

I work by appointment so its easy to say i have a sales appointment.. Which can be a 3-4 hour time.

I have very poor blood supply in my left leg and need therapeutic massage. I tell my spouse the night before that I am getting a massage in the morning.  

We have a sort of "don't ask, don't tell, don't bring anything home" understanding.

I had to hit the like button.

"I'm going to the gym."

But I actually ho to a sporting event an see someone before or after.

But I really do go to the bar before and the pub after