My uncle's sense of humour + living in a bilingual household, where everyone switches languages mid-sentence.
*Phone rings*
*My uncle guesses who it will be*
*Mum picks up and my uncle realises he guessed right*
*My uncle purposefully shouts loudly, praising himself and his magical guessing powers, as my mum tries to understand what my cousin is saying on the other end of the phone*
*Mum is visibly annoyed, says "Shh, Wilfried! She can't hear me and I can't hear her! She says you deserve ein Klaps auf die Schnauze [a slap to the snout]" *
*Mum hands the phone to my uncle, "deine Nichte... [your niece]"

*
My uncle: *Pretends he's been disturbed* "Was ist [what is it], you ugly looking thing?!

" *Laughs manically while everyone but me and him is annoyed."