As Rap-Up points out, Sheen took to Twitter Thursday (May 22) to lament the incident, saying that the pop star's camp refused a meeting at Giorgio Baldi, citing the amount of paparazzi outside the restaurant.

Sheen's fiancee, Brett Rossi, is a big fan of Rihanna, he said, though he "couldn't pick her out of a line-up at gunpoint." As such, she was a bit disappointed that the singer couldn't take time to do a quick meetup - and Sheen even more so.

In fact, Sheen's unhappiness with the situation could not limited to 140 characters. After an initial link to the first few words of his post, Sheen migrated to Twitlonger for a bona fide rant about his distaste for Rihanna.

"Sorry we're not KOOL enough to warrant a blessing from the Princess," he wrote. "(or in this case the Village idiot)."

"no biggie for me," he added, "it would have been 84 interminable seconds of chugging Draino and 'please kill me now' that I'd never get back."