That act of being annoyingly inseparable and spending too much time with your boo through phone usage and text messaging.
My homegirl is phonetically booed up at any given time of the day with her loser boyfriend.

I can't talk right now. I'm phonetically booed up.
by PeachesDiva September 13, 2009
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Currently seeing someone; in a relationship; the act of already having a "boo".
Q: Do you have any friend my homeboyss can kick it with?
A: Sorry, all my friends are boo-ed up.

by Franklin I Hustle August 16, 2007
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Make you my boo, or make you my significant other. It could also be code for sex so watch out
I can't wait to boo you up. (Sex one)
I'm really into you, I'm going to boo you up once I see you. (Not the sex one)
by pink_starburst July 12, 2017
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