either a situation, remark or other uninvited distraction so crude it make your girlfriend completely dry up during foreplay or sex
"That Rosie O'Donnell workout video was a major coozebuster last night - in fact, I almost got stuck inside of Molly and had to call the paramedics! Damn that fat slag!!!"
by Kyle the sick (but wise) bastard May 5, 2004
Get the coozebuster mug.