(Irish slang)

the act of wedging a pipe bomb, molotov cocktail, or other homemade incendiary device into the anal cavity of a loyalist.

the Belfast Breakfast originated in the 1920s as an IRA torture and/or revenge method, not as wedging a pipebomb directly into the anal cavity, but rather dousing a loyalist's pants in whiskey and lighting, followed by uproarious drunken brogue laughter. It quickly evolved and spread to other guerrilla groups, and was even mentioned in Eli Roth's short animated series, "the Rotten Fruit."
Banandar: "I'd love to shove a pipe bomb up their arses... give 'em a real belfast breakfast"
by Wild Drunken Bill August 6, 2007
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