United Kingdom, Aug. 26 -- Jelly Roll joked he can "see [his] penis again" following his dramatic weight loss.

The Need a Favor hitmaker has undergone a dramatic body transformation, shedding almost 300lbs in the last few years, and the 41-year-old singer poked fun at his new physique while discussing concerns over President Donald Trump's size.

Speaking during his opening monologue while guest hosting Jimmy Kimmel Live, Jelly - whose real name is Jason DeFord - said: "After his last physical, we found out that Trump gained 14 pounds, which means he's now tipping the scales at almost 240.

"It's crazy. Think about this, y'all: In the last few years I've lost 300 pounds-that means I've lost an entire Donald Trump...Most of the country wa...