A name for a bi-sexual male who tries to hang out with straight guys and is typically defined as being an annoyance or burden. The patchy represents the patch between the butt and vagina, representing the unsureness of the Patchy's preference in a guy's (butthole) or girl's (pussie).
Dammit, that Nick kid is trying to come over. That fucking guy was caught blowing a dude in the bathroom. Why does that asshole think we want a gay hanging out with our group of guy friends? He's such a patchy.