Name given to someone whose name starts with H and is worth it. Could sometimes be used for a hot girl or for a teacher that you have.
Wow h-grenade is looking great today, i just want to get into her pants.
or
Man I just want to pull h-grenades pin and she her explode.

Man H-grenade's class was gerat today.
by Hugh Jass Crack November 28, 2008
Get the h-grenade mug.