Top Definition
{fy-jahm-mah-slahm-mah} noun, 1. a physical fight or altercation involving a large number of people - usually involving weapons such as bats, sticks, knives, brass nuckles, etc. 2. a rumble
We're getting ready for tonight's fi jamma slamma. Are you in? If so, bring a weapon.

Last night's fi jamma slamma involved more than fifteen people - with three being hurt badly.
by Stupid Is As Stupid Does September 18, 2009

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