His video timer is such a brainer that he is leaving it flashing at 12:00 AM.
by Milt Alwin March 20, 2009
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noun. A person (particularly a female) who will gladly accept head but wont return the favor. Most commonly technical virgins who aren't yet accustomed to much sexual behavior. (Or simply just a prissy bitch)
Kenny: Hey you know any females that give good head?
Eli: Ohhh! how bout Jessica? Dude, I heard that girl swallows!!!
Kenny: wtf? Oh hell naw man she's definetely a no brainer. and her dad's a cop..you got me fucked up dawg.
by jajkbnkn January 23, 2011
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A person of either the male or female persuasion who absolutely refuses to participate in oral sex.
'Man, I had to leave that girl alone. The p***y was good, but I found out she's a no brainer-she wouldn't give me any head!"
by dabbs September 1, 2008
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Somone who is smart funny and fun to be around and used to trick people to think ur talking bout giving head
man i love to be around that girl shes a brainer
by gtman43 April 1, 2010
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A brainer in when a person inhales marijuana smoke through their nose, sending it straight to the brain.
"Hey man, you wanna toke?"

"No, I'll just take a quick brainer!"
by Kanuckilish March 10, 2009
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Old trainers, where the front has worn down giving the appearance of a throbbing brain.
Haha check out his brainers!
by Lewis1983 May 30, 2005
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A girl who won't perform oral sex.
She's cool and all, but she's a no-brainer, so you'll have to settle for an old-fashioned.
by cuban April 26, 2005
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