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."
viết bởi Monchan & ADTD 21 Tháng chín, 2009

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