What is Lbl?
1.
"loud black laugh." This laugh is the equivalent of a large black woman laughing.
Sounded out, it would be hah-HHHAAAHAAA (2 syllables total), like a larger "country" black woman would say.
1. Naw, shawty, bananas dont go in there...LBL
2. On Instant Messager or text message
A: ::insert funny joke::
B: LBL!!
See 
2.
=long, boring lecture
"Mom, please for the love of god don't give me another LBL."
See 
Random Words:
1. 
A forceful blow (punch) to the vagina
bitch back off before i upper cunt you!
See upper, cunt, vagina, blow, punch..