An epiphany of thought. When someone suddenly has a brilliant idea.
omg, i just birthed a brain baby.
The result of when a man jizzes in a girl's ear
My girlfriend didn't want me to cum in her mouth, so I came in her ear. In 9 months, she'll be having a brain baby.
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When someone is a stupid fucking retard
Hey, see Ava over there? She's a fucking brain baby
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Anything with an overly large head, or anything that looks top-heavy in any way.
Man, did you see that psychobilly, brain baby thing over there? it's head was all greasy and stymie like rubber johnny's.
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A man's scrotum.
The balls, particularly when it's chilly and they're tucked up tight against the body. The foldy skin looks like the brains of a tiny baby.
"Ugh, I just caught a glimpse of your baby's brains...put those things away!"
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A coworker who gets pregnant, and then for the next nine months you can't have a conversation with her that doesn't involve the fact that she is pregnant. Bonus for the ultrasounds pasted in her workspace, and the coworkers who fawn over the cuteness of said blob in In Utero.
Oh my god, I just just got back for my gyno, and look at these pictures!
/She has Baby Brain
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When a man cups his thumb and forefinger around the top of his testicles (up toward the choder aka taint). He then applies a gentle amount of pressure to make the testicles bulge. When you look at it just right- the "seam" that separates his left and right testicle makes his gonads look like a palm-sized brain. Hence the term "Baby (for small) Brains."
Tom: "Gosh Bob is really drunk."
Paul: "I know, I hope he doesn't take his pants off again."
Tom: "That guy gets fruiter the more he drinks."
<enter naked Bob>
"Hah hah! Look guys... <sqeezes his nuts> BABY BRAINS!!"
Tom & Paul: "Ah, man not again. Put your pants back on homo, and grab us a beer."
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