Top Definition
A term used when taking a meaty dump. The turn is so fat, that when it hits the water, there is enough splash back to drench your ring piece. Like a makeshift beeday.

Named after the original pilot of the bouncing bomb during world war 2.
Dave: good shit?
Gaz: Yea! I don't like the Winter though, The Barnes Wallace was freezing!
Dave: barnes wallace, cool.
by spidermaguire August 03, 2008
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