Why are you searching up the alphabet? I know your'e just bored and came on Urban Dictionary to look up random things, like the alphabet. If you're bored, stop eating you fat ass and go exercise. Maybe even get a gym membership.
"Hey you fat ass! Get that half eaten chip bag outta here and go on a walk with me!"
specifically lowercase b looks like a thumbsup
A: Nice, I managed to get some good loot from this boss I've been grinding!
B: b
It’s just a fucking word! But sometimes it can be used to response to a friend. Or it can be a short easy to say bitch
Girl#1 hey girl wassup
Girl#2 nothing much. Wassup up with you b