"I was told you were easy."
No crap, I had that happen on a date once, she was nice looking, but that ruined the entire thing.
"So, you like the polka?"
"I like D&D"
"I can't do that, my mommy wouldn't approve"
Anything with the word "Mommy" in it, unless of course she's a bit kinky that way.
"I once went (insert time frame here) without bathing!"
With a wrinkled nose as she walks back from the restroom, "What is that smell?"
Prior to the date, when picking her up, "Don't worry sir, I have a condom."
"I hope my wife/gf doesn't see us."
"This is my dog, he'll be joining us in the bed"