To shoot or (sometimes stab)a person several times, usually in an attempt to murder them. Called "wet up" because there is enough blood to soak their clothes, leaving them "wet".
example of wet up:
" Set me up, wet me up, niggas stuck me up
Heard the guns bust but you tricks never shut me up" -2Pac
280👍 71👎
"C-A- crooked letter, crooked letter, I, D-Y, who you know that cook a better pie?" -Cassidy
33👍 25👎