lol Had to laugh at that as an email subject earlier this week... luckily it dinged in as I was getting into the elevator and my date was honest enough to remind me!  

lady had left.   I called her the next morning for pickup.

Never had a lady leave without the envelope, usually first timers pick it up in the bathroom at the start of the session. However, for ATF's or repeat visits, I have had ladies start to leave and I noticed the envelope still on the dresser/ table and had to remind them.

Fortunately I have never gotten too far before one of us remembered or realized.  

It happens to me all the time but that's because I'm so good in bed, the ladies are too dizzy!!!  Lol, I wish.

OMG!   No you are not!
I was having so much fun and putting on a show and walked out after having great time.

Last time we did a doubles. You had to remind me!!! LOL!