Definitions by DamnDirtySteve

Pinwheel 

1. The act of vomiting and defecating at the same time.

2. When the smell of one's own excrement causes him to vomit directly after defecating.

I was drinking Mad Dog all night, and when I took a shit, the smell sent me pinwheeling.

Pinwheel by DamnDirtySteve October 19, 2003