Although I've never had noisy pax to the point where they were a bad distraction, I have had one pax who tried to adopt the foetal position as we were on the climbout.
This was rather distracting, particularly as the aircraft had a stick as opposed to wheel control. Fortunately a combination of shouting at her and pulling her rather abruptly back cured the problem enough for me to fly a very quick circuit and land.
The one satisfying thing about it was that I'd never had a good excuse to shout at and attack my mother in law before.
