Lady Gaga showed her comic side by making her debut as a 'Saturday Night Live' (SNL) host last night (November 16).

Following in the footsteps of Miley Cyrus as hosting musician during the show's 39th season, Gaga performed songs for her 'ARTPOP' album together with R. Kelly.

'Do What You Want', Gaga's second single from 'ARTPOP', was given its live preview on the show. Her dirty version consisted of Gaga and R. Kelly grabbing crotches, R. Kelly doing 'push-ups' on her before she ended up straddling the R 'n' B star. 

A little later, Gaga returned for 'Gypsy', beginning the tune quietly behind a pink piano before the song launched into full electric glory with her backing band, tearing the roof off with everyone on stage including a purple-clad dancer joining in.

The show was littered with hilarious Gaga-featuring sketches in which she showed she can poke fun at herself.

In a Kanye West-Kim Kardashian talk show segment, Gaga played an Apple Store employee who couldn't get behind West (Jay Pharoah) and his comparisons of the two ladies' get-ups. "I think people who try too hard with their outfits are maybe hiding something," she said. "Like come on, dress like a person."

Another sketch advertised the release of an album featuring the worst cover songs of all time -- hosted by Counting Crows' Adam Duritz, played by Taran Killam. Though the vast majority, including a Rick Ross rendition of Anna Kendrick's 'Cups' and Britney Spears' take on 'Hallelujah', weren't real, Gaga appeared to perform what was billed as a cover of Madonna's 'Express Yourself', though she merely sang 'Born This Way' -- a subtle nod to previous allegations that Gaga had ripped of Madonna's song.

The final Gaga-featuring sketch found the musician in the future, living in a small apartment hoping someone would recognize her hits from her glory days. At one point Gaga sang "I'm on the edge of roast beef" to meat and later trying to jog Kenan Thompson's memory by trying to wear it. She plays her piano with her Grammy awards perched on top and a little machine that makes clapping noises to imitate an audience's applause (see video below).

Among Lady Gaga's other roles of the evening: child actor (and the G-rated version of "Training Day" star) Lizzy Jacobson, and a Marisa Tomei-in-"My Cousin Vinny" doppelganger.

Lady Gaga is on course for the No.1 album spot both in the US and UK with 'ARTPOP'. Lady Gaga will appear in a Muppet Show special on November 28. 

Pressparty will add more photos to this story as soon as they become available.

Watch Lady Gaga and R. Kelly perform 'Do What You Want', and an 'elderly Gaga' sketch snippet below: