A biological boy or male. Usually used in refence to trans people, such as a maleto female trans-woman or female-to male trans-man.
I'm a bio-boy! Or Do you think I'm a bio boy or a tranny?
by be-bop-a-lula February 2, 2005
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The Bio Bois are the best bois in the whole of the school. They surpass those who do Chem and Physics. Btw it's national blueberry pie day. (28/4/22)
Robin: I wish I could be a part of the Bio Bois. *cries*
by xx69boi69xx April 28, 2022
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A young lad with a more than average almost suspicious skill level in IB Biology. A mix of different races and identities. He stays in dark until the Bio teacher asks a question. Bio Boi is always on the lookout for thick juicy trans fatty acids or Complex interesting polysaccharides. Bio Boi is self-sustaining as his Calvin cycle is Moy bien. Finally, he often likes to refer to anything sexual in Biological terms.
Me:"oh damn, she thicc"
Bio boi: "here gluteus maximus sure is of an increased size"

Me: "I'm hungry
Bio Boi: "My cells need to respirate, I need nutrition in the form of proteins and Unsaturated fatty acids."

Me: "do you even lift bro?"
Bio Boi: "My Amino acids are at work and my muscle fibre is doing their job."
by collish epic January 20, 2020
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A young lad with a more than average almost suspicious skill level in IB Biology. A mix of different races and identities. He stays in dark until the Bio teacher asks a question. Bio Boi is always on the lookout for thick juicy trans fatty acids or Complex interesting polysaccharides. Bio Boi is self-sustaining as his Calvin cycle is Moy bien. Finally, he often likes to refer to anything sexual in Biological terms.
Hey, Bio Boi

Me: "Damn she thicc"
Bio Boi: "Damn she showing of dem Fatty Acids in her glueteus maximus, my gamets wanna swim!"

Me. "BBBBBio BBBBoi
Bio Boi: "Hey fellow Homo Sapiens, How's your synapses going"

Me: "Why is my GF so moody"
Bio Bio: "I guess her membrane has become a corpus luteum just wait till it dissolves in the ovaries"
by collish epic January 13, 2020
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