My friend told me about this and i thought it was an awesome enough highdea to post here:

the Shotgun Grav Bong.

you all know how a grav bong works. well next time you're at a party and want to shotgun a beer, instead of cracking the top after you start, just poke another hole in the top beforehand and put a lit joint in the hole. shotgun the beer, then pull the joint out and clear the the can. and voila, you are now the coolest person at the party