1. a man who has been taken apart and resutured to resemble or be used as a bong.
2. a man who has consumed copious amounts of cannabis product.
1. "hey man, check my new piece, i call it the manbong!"
"holy shit, let's smoke a bowl!"
2. "oh, wow, i'm so high..."
"dude, you smoked so much, you're like a mufuckin' manbong."