Top Definition
A euphemism for gay male sex, for use in sensitive company
"Oh, Gary and Paul were out together all weekend. I think they must have gone to the theme park, they mentioned riding the Bisto Logflume together three times in a row"

"Oh man, next time we ride the Bisto Logflume, you're going in front. Those baby gravy stains will take ages to get out"
by plinkyplonker February 06, 2010

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