Why do I keep scratching scratching my balls I don't like this

feeling I don't like it at all cause I got crabs, I got crabs, I got
crags I got those little fuckers biting and sucking my blood
there's crab eggs in my bed there in the carpet too I'll go to the
store buy A200 shampoo I got rid of them I got all of them they
won't be back wait a second, what is this itching in my crack
cause I got crabs, I got crabs I got crabs, I got those little fuckers
biting and sucking my blood