A person or thing who tries too hard to be funny by being "random", i.e. Invader Zim, Foamy the Squirrel. Think old Hot Topic shirts and 13-year-old anime fans.
"LOL omg so random rofl XD OMGGGG CHEESE MONKEYYYYS hahaha WAFFLES"
"Dude, stop being such a penguin of doom"
A type of slut-shamer who wants sex, but only wants it with people who have not had sex, out of insecurity about ability. Takes the attitude of "I want to be the best thing that's ever happened to a woman's vagina and if she's had anyone else, then I won't be."
"Did you ever hook up with that one guy?"
"Nah, he didn't want me, he found out I'd had a couple other partners and went all king of the empty castle syndrome."