Fell asleep at beach and now have nasty farmers tan and gym shorts tan?

i went to beach w/a t-shirt and gym shorts and fell asleep for an hour. my arms were already dark and now they're even darker with a farmers tan. My thighs now have a line seperating white/yellow skin with pink and brown skin and it looks really bad...any way i can get paler and even out my skin tone? please helpp!!!