I haven't used a bad one!

Never tried one, but I've heard my fair share of dumb ones... Dumbest one someone told me was probably "Well, here I am. What were your other two wishes?" or "Hi, my name is Trent, remember it, cause you’ll be screaming it all night!". <_<

"You must be fire because you melted my icy heart" To be fair though, somehow it worked on the guy.

Never used one, but I'll tell you one I found very peculiar that I heard someone else say to my master once: "I could have called heaven and asked for an angel, but I was hoping you're a slut instead." I think I get the point, but why would someone say that? ;_;

"If you were food, I'd eat you all the time"

"Would you help me with my math homework? I think I know a formula. You have to add a bed, subtract the clothes, divide your legs and pray you don't multiply if I am correct."

You have a beautiful head. It would look marvelous next to the other ones in my freezer. Mind you it was at a Halloween party and I was dressed up as Freddie Kruger so I thought I'd try it out. The girl I used it on just laughed it off, and hey it worked... somehow! It really shouldn't have though. xD

It's impossible for me to use a bad pick up line.

"Can you hold my hand? I want to tell my friends an angel touched me"

...

Well, people don't seem to like it when I tell them they look like my brother.