This one could be a bit contentious but my friend is a very nice person and said it off the cuff not to cause offence:
We were in Leeds staying at a friends house and due to go go karting. Our other friend phones up and says ‘Alright Schumacher’ to which my other friend ( who is gd at go karting) replies ’ I am still in bed if that what you mean’ he was still in bed. I only realised the ‘joke’ about 10 mins later.
(He did apologies as it was bit of an off joke)