a nickname for the name bill or william. someone who loves getting it in with hot blonde girls with big boobs
woah, that billium is so cool
by jhgffgjkm January 17, 2011
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A sorry ass safety who gets benched over a second string qb
Billium DelDick got benched over our second string qb
by Poopsnag October 28, 2020
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someone who has the feeling of turning into H20. They might also like big fats asses from boys.

(Their balls are missing.)
"Wow! Is that Billium? I heard he likes Aticaus!"
"Why is that?"
"Aticaus has a big ass and cock!"
by cool snowman guy (w/ no balls) December 22, 2022
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Someone who has no balls, but has a big fucking cock the biggest in fact.
akov had such a fun time with Billium last night, his ass hole is stretched!
by akovlives December 22, 2022
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