I've always found pickup lines to be a little corny, but they can be quite funny, as you'll discover if you install Pickup Lines.
This free app allows people to share their best pickup lines with a burgeoning community of users. Pickup Lines is incredibly easy to use thanks to its slick, compact interface. Latest posts are listed clearly in a scrollable list and you can just click one of them to read the full pickup line.
Once you've read a line you can rate it, favorite it, send it to your friends, or view the author's profile. Unfortunately, Pickup Lines doesn't yet have a tool for sending direct messages to other users, but hopefully we'll see this added as the community grows.
In terms of the content of the posts, I'm not sure how far most of these pickup lines would get you with anyone (unless they were really desperate), although lots of them are quite amusing. Be warned though, that this app is strictly for adult eyes because some of the language used can get a bit fruity. If you get too offended by a user you can flag their activity as inappropriate.
Pickup Lines can be funny at times, but for the majority of the suggestion, the most likely reaction you'd get if you used them would be a slap across the face.