Whenever I'm interacting with people it's as though my priority is ensuring that I don't embarrass them, so even if I'm mates with someone and they say something that I find ridiculous or something that's massively annoying, instead of taking the piss I just go 'heheh yeah'. It's the biggest personality defect of all time.
At uni this lad in my class that I have my dinner with and stuff some days always wastes food cos he decides it's 'shit' cos he's so fussy. The other day he bought a chicken fajita wrap thing and ate about 10% of it cos he 'doesn't like tomatoes'. Any normal person in possession of the bants gene would've said something like 'love wasting food you!' or 'fussy bastard' but instead I just nodded in acknowledgement and carried on eating my sandwich unable to be anything but nice at all times