Don't Call Me on April 1st

Ring Ring Ring....
Me: Hello
Old woman: Hallo, Wer ist da? (Who's there?)
Me: Secret....
PAUSE
Old Woman: Hallo, wer ist da?
Me: Who the hell are you?
Old Woman: Kann ich mit Frau XXX sprechen? (Can I speak with Mrs. XXX?)
I realised she's soliciting/ A woman from a call centre who keeps bugging me!
Me: (Thought of saying there's no Mrs. XXX in this household.) Sorry, die gackt gerade! (She's shitting!)
Old Woman: Kann ich nochmal anrufen? (Can I call again?)
Me: Nee, ich glaube sie hat Durchfall. Es wird noch lange dauern. (No, she has diarrhoea. It will take time.

BWAHAHAHA!