Because he kisses his mum with that mouth.
Short for words.
They're harmless until you put one in your mouth and light in on fire
He kisses his mother with that mouth.
Umami.
Your mum
Because she's always drinking from the coup de Grace. (This was my sister's favourite joke when we were kids. Once our mum flipped out on a long car journey because she told it too many times).
Because they record everything. (I swear I made it up n I'm brown too)
Gilles de la gourmette