Top definition
(n.) A little sibling. Particularly annoying and stupidious.
(v.) The acting of being a small annoying being.
"Little sisters are all boolus!"
"You just messed up my computer!! STOP BEING A BOOLU."
"Yea, you can come over to my house, if you don't mind my boolu."
by Monchan & ADTD September 21, 2009
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