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The act of dropping a godawful burst of bowel gas, typically while surrounded by a densely packed crowd and often in a captive environment, such as the London underground or a bus with standing room only.
1) I boarded the extremely busy train at Blackfriars on the circle line and after the doors shut, I deliberately detonated a sewerside bomb. It wasn't long before the harrowing consequences of my olfactory assault were visible on every disgusted face within a three metre radius.

2) Whilst standing on the bus the other day I had the irresistible urge to barf and it soon became evident that a despicable sewerside bomber was in our midst.
by Ontology Mustard May 02, 2016
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