Uh oh, Rihanna has done pissed somebody off again, but this time she may have messed with the wrong one!

Rihanna just made a new enemy and he goes by the name of Charlie Sheen. Rihanna set Mr. Sheen off, by turning down his request him introducing his fiancé to the pop star.

It didn’t take long for Charlie to express his outrage over the occurrence at ritzy Giorgio Baldi restaurant in Santa Monica Wednesday night. Sheen went on twitter to blast the celebrity — and of course it took him over 140 characters to express his outrage, so he used the TwitLonger App to explain his case.

While Charlie was celebrating his fiancé Brett Rossi’s birthday, they were told that Rihanna was at the restaurant as well. Charlie sent a request to RiRi’s table, in hopes his soon-to-be wife can meet her, because she is a huge fan.

However, Rihanna denied the request because there was “too many paps outside.” Sheen wasn’t too keen of Rihanna’s response, so he wrote this:

“Nice impression you left behind, Bday or not,” he said.”Sorry we’re not KOOL enough to warrant a blessing from the Princess (or in this case the Village idiot) ”

Then he insulted her new get up stating,”Halloween isn’t for a while. but good on you for testing out your costume in public. it’s close; a more muted pink might be the answer, as in: none.”

Now Charlie is known for not holding back his feelings and so is Rihanna, I can’t wait for her response. Sheen needs to calm down, and quit feeling like he is entitled to something.