This can only occur when the chick you're fucking has to take a shit right before you cum. After you cum the bolus of feces begins to protrude from her anal sphincter. Once an inch or two has made its way out of her, you pull out and blow it all over that turd. That's a glazed Snickers bar.
My cousin ate a glazed snickers bar and it gave him some bad indigestion.
by Stevie Yates September 12, 2009