You know you've had good sex when...
 

Okay - here's a new game - just finish the sentence... keep it clean and funny

Allow me to begin ;)

... you've both gone down one clothing size.

RE: You know you've had good sex when...
 

when she says thank you

RE: You know you've had good sex when...
 

...you can speak only in vowels... "aaaooooohh....ueeeeei....oo oi..."

RE: You know you've had good sex when...
 

When she turns over and says "Again...Please"

RE: You know you've had good sex when...
 

nah tat means you didn't last long

RE: You know you've had good sex when...
 

... when the whole neighborhood feels the urge to lite up a smoke when you're done

RE: You know you've had good sex when...
 

...when you both can't stop laughing (this is from experience)

RE: You know you've had good sex when...
 

you hear applause afterwards...

RE: You know you've had good sex when...
 

...the WHOLE drive-in gives you a standing ovation

RE: You know you've had good sex when...
 

DAAAAAaaayummm Jazz...

I've only got half the drive in cheering...;)