it means a guy that is overly desperate for women, especially if she has a boyfriend, or has expressed her disinterest in him whom which he continues to obsess over. They're usually just virgins that will accept coochie from anyone regardless of who they are.

the thing that you don’t have when you’re phones percentage is over 20

A word minions say that means a toy.
Also can be used as a fun code word in a relationship meaning "kiss me?"

A guy that enjoys making fun of others because inside he has low self-esteem.