Any flying insect which can be found hanging around the anus of cattle / sheep and / or welshmen.
Have been known to descend to feast upon shite from said crittersarses.
Synonyms for Bum Bum Fly
On this page, you will find 30 slang terms related to Bum Bum Fly. Some of the top words include: Bum Bum Fly, Cheese-weavil, Dag, sheepshitzonmydik, cob, and 25 more.