See Head Bin . Basically, some html expert messed up and but this here since %20 means "space".
Me: Did you see that idiot shoot 12 shots of jager in a row?
Tech savvy friend: Yeah, he's such a head%20bin
by A. Dvious One November 18, 2017
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To break down the word , head refers to getting neck ( having ones genitals sucked). %20bin refers to the amount of nut you have in the "tank". So the term head%20bin simply is defined as , upon getting neck one nuts beforehand ,therefore lasts longer during oral sex.
"Yo bro , Ashley is about to give me neck for hours cause I have that head%20bin."
by ovo_joel November 17, 2017
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when your girl sucks your dick and 20% of your balls
guy 1: yo my girl gave me head%20bin last night
guy 2: nice bro.
by o hell ye November 17, 2017
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