Need excuse for not going to gym class

well at school the pool is so dirty and people get liver spots and fungus and stuff like that on their face is there something that I can say so I don't have to go for this week?? like I have a kind of skin problem or something believable

alergic to chlorine

plantar wart on your foot and cant get it wet

ear infection

sinus infection

=]

u sprained your ankle and cant kick. get a bandage to make it look authentic.
or ask your mom to write you a note, they cant argue with that.