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the outdoor act of a female companion taking a shit in your wellies then you proceed to fuck her up the shitty arse whilst wearing said wellies. fucking like a sheep and a welsh farmer, while she is bent over the back of your pickup.

( jumbuck refers to aussie slang for sheep )
mike: billy did you take that girl out last night.

billy: yeah i took her to the woods and gave her a dirty jumbuck.

mike: your a legend bro

jumbuck anal
by SuperDaneeC May 31, 2016
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