The cool way of saying <3

>4 is if you're too scared to text <3 to a girl, or boy. They probably wont understand but you're gonna feel like you've made progress.

National foreskin day. A day to honor and respect the foreskin on a man's penis.

4 for 4 a deal at Wendy's that involves head inside the bathroom which is a deal if you ask me.

4-for-4 means blowjob.

A woman with four kids fathered by four different men.

Text and messaging speak for the phrase "for sure". The ~ (tilde) represents a wave coming into the shore.
This was adapted from a hand gesture where one would put 4 fingers up and then mime a wave with that arm coming in to meet the shore, which is the other arm.