Exploding Itchy

1 When one is scratching thine ass and begins to tread into uncharted territory, resulting in getting your finger stuck in your ass; at which point the only solution for removal is to build up "pressure" by eating gassy foods.

2 When you are in past your elbow with your partner and your partner suddenly decides its time to shit.

My mom's friend's uncle's second cousin's gym teacher was out of school for three days once, recovering from a sudden exploding itchy.