People using "speaker" mode on their phone in public places.
I've had 2 in the last week, in a cafe and a queue at a wildlife park*.
They usually get the hint when I get closer and start speaking loudly..
Something along the lines of "what sort rude f***ng pr**k would use f****ng speaker phone in a public effing place"... loud enough for the person on the other end of the phone to hear me and say something.
(*there were no kids around, I was lining up to pay for something).


