The BOARDWORLD Forums ran from 2009 to 2021 and are now closed and viewable here as an archive
The one i use which best suit MIZU- “farts like a two-stroke” (person with a noisy flatulence problem)
Alf’s favourite- “strewth!” (expression of amazement)
‘Took off like a dog shot in the arse’ (something took off fast)
Wombat - someone who eats, roots and leaves