When you do something and it doesn't use all your ability but it still comes out positive or good.
Person A: Yo check my latest tweet.
Person B: Bruhhhhh that shit is funny as fuck!
Person A: It's a little somethin' lite! You'll get sum hard as fuck later!
Person B: Bet
Used by a fucktard. If someone you know uses the word 'Somethink', it is HIGHLY recommended to laugh at them. Unless it's a child, then politely correct them.
Dumb guy: Are you going to buy me somethink?
Cool, smart guy: No. And it's 'Something'. It's a thing, not a think.