Funkmaster Flex went in on R. Kelly last night, after the "R" in R&B was a no-show for an interview.  According to Hot 97′s Program Director, Ebro Darden the two had beef do to a statement Flex made about Kells in 2008.According to reports, the problems stems from Funkmaster Flex plublicly voicing his opinion about R. Kelly’s 2008 interview with BET following his acquittal of child pornography.  Flex aired out his disgust with R. Kelly after the singer questioned what age constitutes a “teenager”.  During that interview, Kells said he's had several "Friends" who were 19 year.

Check out Funkmaster Flex’s 2008 verbal tirade following R. Kelly's BET interview below:

This is the interview that Flex is reacting to.

Yesterday Flex was at it again on Twitter, apparently the DJ was pissed that the Chi-Town singer refused to appear at Hot 97.  Ebro also took to Twitter to shed more light on why he thinks Kells didn't show up.  Basically, saying what everybody already knew.  Hot 97's PD tweeted R. Kelly didn't show based on what Flex said about him in the video above.