To have 'A Bump' is to snort a small, conveniant amount of the above substances. Usually on the corner of a credit card or a small line snorted from your hand or otherwise.
At a Club: "Here, have 'a bump' offa this bankcard."
(2) To play any type of musiq you listening louder. To turn it up.
These people who made their own defitions for it (kokane and some other fools) claiming a bump is specifically for sniffing yay are completely wrong. DO NOT be fooled by incorrect definitions.
b.) Hit this bump real quik
c.) Put the yay on the key and bump it
(2) a.) Bump that track up
b.) I bump this sh*t whenever it gets
play on the radio