Simp

Someone who sucks up to girls just so they'll date him
Not to be confused with people who are nice to everyone
A good example is Brock from Pokemon
That simp would literally go for any girl that would be in a 100-foot radius of him

Matt: Hey dude, it's game night, what do you wanna play?
Brian: Hey, I dunno, I'll play anything.
Joshua: Sorry, I'm hanging with Melissa tonight to help her get her homework done.
Matt: Wait, are you dating her?
Joshua: No, she's cute, that's all.
Matt:...
Brian:...
Matt & Brian: You little simp-