It is when you put Tobasco sauce on a Magnum, or your penis if you prefer, and then proceed to thrust it into a girl' mouth and have her suck on your flaming hot dick.
Dude 1: "Yo, I gave your mom a flaming magnum last night!"
Dude 2: "Well, she did always love spicy meat..."
Dude 2: "Well, she did always love spicy meat..."
by Jib Smith November 29, 2007
Get the flaming magnummug.