Mental fatigue which prevents you from clapping. Caused by over exposure to applause at a meaningless childrens school event where every parent feels the need to clap anytime a persons name is mentioned.
Principal: ( who just finished reading the names of all 500 students who mastered the pencil shapener this year) "Before we recognize all the students who received a grade this year, how about another round of applause for all these future writers".....
Wife: " Honey, your not clapping!?"
Husband: "My hands are worn out and I'm going to need them so that I can shove a spike in my head to relieve the pressure from Clappal Tunnel Syndrom"