Anything food related.
The obvious one’s when some relentless tiresome prick says ‘Have a cup of tea, it’ll cool you down’. Nob. You are just a nob.
My favourite’s when people get a bit of eggshell in their eggs and insist using another bit of the eggshell’s the best way to scoop it fucking out. Boring bastards. Hand straight in. Failing that a spoon’s always, always quicker.
Another one’s people saying microwaving food kills its nutrients. Where are they getting this shit from?