arse sandwich
What you accuse someone with shitty morning breath of having just eaten.
Mate, you smell like you just ate an arse sandwich!
arse sandwich
A sexy behind filled with a face or sperm. The object of desire (the person's bottom) becomes an arse sandwich only when one's face/ sperm is applied as filling. Yummy!
Man (on seeing a sexy arse): "I could stuff my face with some arse sandwich."