Jaboo is the sexiest nigga to exist, The most majestic nigga to Walk this earth. The man that makes straight niggas Gay, Just the eye contact alone can get any woman wet and any nigga Hard.
Adjective, meaning of indeterminate origin, random scope, or just not clearly defined. Probably a contraction of "jabber" and "taboo", suggesting equal parts slander and salacious intent. However, one suggestion is that it's a jaboo re-arrangement of "jao bo", a loose Mandarin to English transliteration of the equally random and indeterminate "dogstick", making "jaboo" self-referential term in the spirit of "GNU".
"That was a jaboo dress. Did she think this party was some crap event?"