Watch Charlie Puth Realize He Shouldn't Have Covered Katy Perry's Bon Appétit Mid-Performance!

Not all songs are as gender fluid as we'd like them to be.
Charlie Puth learned that a bit too late performing a live cover of Katy Perry's Bon Appétit!
The pop singer performed an acoustic, Puth-ified version of Katy Kat's hit song on BBC's Radio 1 -- but even a few lyrical alterations couldn't keep the 25-year-old's version from sounding, well... disgusting!
Related: Katy Says Donald Trump Triggered Her 'Full Sexual Liberation'!
While the song's double entendre is winky and fun coming f