The moment appeared to be a failed stunt reminiscent of Kanye's 2009 VMA stage moment.
Though Farrell joked that the bit was staged, it turns out the act was an attempt at a publicity stunt for Plaza's upcoming film, "The To Do List," which the actress had written across her chest.
According to MTV, Aubrey was escorted out of the awards by network executives and the head of Viacom security during the following upcoming break.
The film, out August 16, follows Brandy Clark (Aubrey Plaza) as she attempts to accomplish a list of items before heading to college in the fall.
The movie also stars Bill Hader, Rachel Bilson, Andy Samberg, and Connie Britton.
Here's another shot showing the awkward tension on stage:
Kevork Djansezian/Getty Images
And, here's a clearer image of the film title scrawled across Plaza:
MTV screencap
The actress later took to Twitter calling the stage onslaught a success:
thanks for the advice @kanyewest went better than planned! #mtvmovieawards #chrisbosh #thesecret
— Aubrey Plaza (@evilhag) April 15, 2013
Watch the awkward moment below: