hippy grenade 

An explosive marijuana seed detonated from the heat of a blunt or joint cherry.

AHHH!!!! There's shit in my eye...must of been a hippie grenade.
Well make sure you get the seeds out next time.

hippy grenade by Mark March 21, 2005

Hippy Grenade 

When you are smoking a fat blunt of schwag ass weed and smoke a seed and it pops like a grenade giving you a flash back to nam and the dirt weed

Make sure you pick out all of the seeds of this shit weed cause you dont want to run in to a Hippy grenade

Hippy Grenade by chea son June 27, 2009