Billy's knee jerked, and he looked around cautiously. His right kneecap always tickled when someone was about to pass gas. It wasn't a particularly useful prognosticative talent, but it had saved him a bit of olfactory discomfort more than once.
Just as he suspected, Billy's older brother, Reginald, rounded the corner masticating in content. In his hands lay the uneaten half of a chili burrito. The other half hung screaming and clamoring from his mouth.