Watch Ariana Grande Play Insta-Karaoke + See A Mega-Talented Arianator Spit A$AP Rocky's 'F**kin' Problems' All Over Her (VIDEO)

By now you know that we are so, so, so excited about Ariana Grande's upcoming pre-show performance at the 2013 MTV VMAs!! Er, did we say that we're excited? Yes? Oh, what's that? You want us to get to the point already? OK! Well, part of the aforementioned VMA excitement stems from this all access pre-VMA livestream running from now through Saturday (Aug. 21 to 24) featuring non-stop pre-VMA interviews, roundtables, and music videos.

And speaking of which, how unbearably CUTE was Ariana Grande on tonight's "MTV First" livestream? Not only did the "Right There" singer answer tons of Twitter questions from her adoring Arianators, but she also humbly stood aside for a sec to let one awesome fan rap the lyrics to A$AP Rocky's "F**kin' Problems."

Watch MTV's VMA all access livestream after the jump.

Visiting MTV's studios for a very special pre-VMAs interview, Ariana took some time out to chat with MTV News' Christina Garibaldi and Buzzworthy's Tamar Anitai about everything from her upcoming album, Yours Truly (out Sept. 3!) to Sunday's VMA Pre-Show performance. But the best part? During her chat, Ariana took a sec to play a little game of quasi-karaoke-style "Finish That VMA-Nominated Song Lyric," where she managed to complete the words to Taylor Swift's "I Knew You Were Trouble." and Selena Gomez's "Come And Get It" but NOT A$AP Rocky's "F**kin' Problems." Lucky for Ariana, one of her fans in the studio audience got right up and finished the lyric for her. #Impressive.

P.S. Think we should tell Ariana that the song's actually by A$AP and not Kendrick Lamar? ....Naaaaaah. Check it out below, and don't forget to watch Ariana's VMA Pre-Show performance live from the VMA red carpet on Sunday, Aug. 25 at 8 p.m. ET!

+ Watch MTV's VMA all access livestream.

Cast your vote NOW for this year’s Video Music Award winners from the 2013 VMA Nominees. The 2013 Video Music Awards air Aug. 25 on MTV and, live from Brooklyn's Barclays Center. No sleep till Brooklyn!

Photo credit: MTV