OK, I swear this is true and it actually happened to me.
Just as we were finishing the deed one night, a girl I had known for over 10 years looked at me and said, "I am sorry, but who are you?"
Sounds like a joke right? Then she asked where we were and who she was.
I dressed and had to help her dress because her clothes were unfamiliar, and got her to hospital. She had global temporary amnesia that lasted for 6 hours. Talk about freaky.

Do I get a discount? It's my tenth visit.

That was quick

This reminds me of the " rodeo " This entails doggy style then in the middle saying " this is your sisters favorite position too " and see if you can stay on top for 8 seconds.

My mom taught me that one!

Should we call the dog over?

Reminds me of an old joke, I hope nobody gets offended.
A young guy and his sister were both dateless one night, unusual because they both had plenty of action normally. Eventually one suggests to the other that they alleviate their frustration and get it on. Afterwards, the girls asks her Brother, "Well how was I?", the brother replies, "Great, nearly as good as mom" then she says, "That's what Dad says".

I've had better.

One last one....

At least you tried.

Well . . . That was a mistake!

First to finish!

Feels good, eh? ( I was dating a Canadian fella for a minute, years ago!). Still makes me laugh.

I win!

" the condom broke"

" whoa ! ... that's IT ???"

after a particularly noisy orgasm, you look up past your lover ... " oh honey, you got home early !!! "

" I didn't notice all those little scabs before ..."

Next time bring mustard

We're not doing this again, it wasn't the sex... I just can't see a romantic relationship with you and I'd like to just be friends.

After I had returned from a long overseas deployment, and the wife (now ex-wife) and I were intimate for the first time in a long time (I was deployed for several months), I jokingly said "that was the best sex I've had in like 3 weeks."

Needless to say, she didn't like my joke.

I remember saying "Soooo, do you mind calling your sister in? I've got enough in me for her too"
Yeah... The girl I was messing with got mad as hell. She knew I was joking, but it just came across bad.
She still glares at me when I say something about her sister. Jokingly.

You did get the HPV vaccine, right? (... and no, I have never, ever, said anything to make someone feel uncomfortable after sex)

Was it good for me?

Personally I think what was your name again is pretty awful, if you forget her na me after maybe calling it out during sex , ya might wanna get the brain checked for memory issues

1. She reaches over and slaps him on the ass: "Good lay dude! Now get the hell out of here."

2. Does this look infected?

I’m very considerate.

Wow, that was great. Maybe we can do this another time without your grandmother watching?

Worst thing to say - I wonder how long ago it died?
Worst thing I've said - I could go for some pancakes. 2 minutes later How 'bout them pancakes?