It could be in the form of a sack that is put inside you if your stomach and various other important transit and digestive organs go iffy haywire, you may die soon if you have one.
Or in the form of a bag connected to your bladder or shitterpipe through an anal extrusion. The muck n piss traverses into the sac but there is no ding ding so you need to check at intervals to make sure you're not leeking juices all over you cream carpet, for fun why no attatch a rubber glove.
Finally could be a pathetic small person whom has no life or interests in the wellbeing of others, you exude coarse emphatic remarks at them leaving them huffy and angry, they then go and break your personal belongings and trash their room, i.e. george bush does this after a hissy with government officials or if he doesn't get his own way manufacturing huge rubber cocks filled with oil.
E.g. I.e, par example:
Reno: how you standing man, you aint got no insides, y'all be a miracle of the science.
Pale guy: yer i had this douche bag fitted; all pumps 'n' shit i wish i could take a crap and read a magazine on the flusher but i aint got no reasons for using the can man?
Reno: oh too bad, you wanna watch me take a shit?
Pale guy: silece, long silence...... death by defication?
Kahn: Oh it feels so odd pissing inter piss bag
Shortey: ohhh it's all green and yella, you alright
Kahn: yes, if you'd excuse me gentlemen i need take a refill
Shortey: like a cup of coke refill
Kahn: get shortey, what a doofus, i need to empty all my shiz outta my nugget sack man.
Kid #1: i hate you, you douche bag. Those were my c.ds why'd you have to go take a jiz all over them.
Kid #2: oh no, that was purely coincidental i happened to let my love trumpet bugle monster slip out of bed whilst having a very intimate dream involving mummy, me and daddy.
Kid #1: you sick fuck, stop playing with your cumberland
Kid #2: hey slick, i was kiddin, not my fault i have a curly sausage. I like salty tail sap that comes out of pepperamis, is that sick? I am a douche bag.