one who is a champion of getting boners, or this phrase can be alternatively used as a term of endearment
i.e. i
Guy 1: fucked a snowman and didnt lose wood!
Guy 2: did you bust?
Guy 1: hell yea all over up inside that snowmans bunghoe
Guy 2: wow bro youre a total boner champ

I.e. 2
Guy 1: hey man sorry i cant come out tonight i got grounded for putting a cactus in my uncle billys mailbox

Guy 2: its ok dont worry about it you litttle boner champ
by big but toucher December 12, 2016
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Something that to most is not a real thing, kind of like santa or the Easter bunny. But me brea rt an julie know the truth that he is real
Sara- justin do what I say I'm bossy
Justin- but Mike the boner champ
Sara- that's not real

Justin, brea, julie, and rt all look at eachother and wink cause they know the truth. Mike is the boner champ
by Tainty McBalls February 17, 2021
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