low quality weed. usually larfy buds from the bottom branches of the marijuana plant, pre-mature buds of any kind, or shake/trimmings from higher quality buds. May sometimes be obtained for free or at very low cost.
equivalent words: scrum, scrumble, scrumalum

also used to refer to other crappy, low quality, or otherwise unfavorable conditions.
"This scrum-bum isn't getting me high and it smells like shit and makes my throat burn."

"I cut the scrumalum branches off and throw them in the compost pile early in the season"

"What are you doin'?"... "I'm scrummin' it up with the vapo, this shit's too harsh to smoke."
by the sultan of scrum - October 18, 2007
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Called such due the way the clothing material around a woman's vagina gets swallowed up by her flappy lips, creating what is often known simply as "camel-toe". An image reminiscent of a "scrum" in the game Rugby, where in trying to achieve control of the ball, both teams huddle into one small area, much in the same way the material around a woman's bearded oyster get's huddled into her beef curtains, creating the Front Bum Scrum.
"Hey, Sally! How's it goi.... woahhh..... nice front bum scrum you got going on there ;)"

"Oh my god, did you see Jenna at work today? She like, totally had a front bum scrum happening aaaaall day. Don't even try and tell me she didn't notice!"
by scrumdiddlyumptiouspotatoes August 3, 2017
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