Someone associated with having a low iq and a below average common sense.
Individuals that search their names on Urban Dictionary and share the definition with others in order to feel good about them seleves. These people generally have IQs equivalent to that of small fish and think that Lelepons is funny.
"Hey, check out that brainlet over there."
Someone with severe mental retardations.
Just like a manlet is a half-man, a brainlet is someone with half a brain or endowed with a very small amount of grey matter.
Billy: "Hey dad i microwaved the cat to dry his fur after the bath and he just exploded wtf"
Dad: "You're a fucking brainlet Billy"
Someone so mentally retarded it hurts
Alfie is the biggest Brainlet
a complete moron, someone so stupid it's unbelievable they've not been killed off by their own stupidity
"why did you do that? you're such a brainlet."
A fucking idiot. Typically a libtard. Few can return from brainlet status. Despacito.
My nigga just stuck his dick in my mf ear hole in front of my momma mfw that nigga fatty and a brainlet.
You thought we could see you air quotes on ps voice chat? Absolute brainlet!