Dust in the Muff

After banging your partner, you turn on the dust ridden ceiling fan for all of the dust to fly off on the bed, but most importantly, her muff.

I accidentally pulled a dust in the muff on my girl last night and she told me she wasn't a fucking swiffer and left.

arse dust

A cloud of dust blown from an arse, when a powerful fart is expelled.

Wow man, did you see that? That man has major arse dust.