Landing and slowing down to taxispeed, and still expecting to vacate at the exit at the runway end when the frequency is busy, yes, I will throw you off at the first exit if needed, even if it's the wrong side and you'll have to cross again later
And the initial call before making a request.... as SThor mentioned.
Not understanding the difference between a visual approach and VFR (that's not really annoying, just mildly surprising).
Over the years you'll get used to pilots being "morning lazy" and not paying attention, so when traffic picks up you'll end up with the 4 or 5 instructions you'll have to repeat until everyone seems to wake up... That's not really annoying, just part of the job, and I don't mind it