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Watch Alexander Skarsgård Say 'On Fleek' And Make It Sound 'Really Sophisticated'

He's being 100 percent serious.

In his new indie flick "The Diary of a Teenage Girl," Alexander Skarsgård finds himself in the middle of a very inappropriate love triangle when he becomes the object of a teen girl's burgeoning desire.

The coming-of-age film follows 15 year-old Minnie (newcomer Bel Powley) through her sexual awakening, a process which she records for on a series of audio tapes kinda like a -- you guessed it -- diary. Minnie obviously hits it off with Skarsgård's pornstached character Monroe, but how well does Skarsgård really know teen girls IRL?

For example, can he name any members of One Direction? Is he caught up on all six seasons of "Pretty Little Liars?" We decided to quiz the actor to see how much he really knows about teen girls and their interests today. The result is highly entertaining.

Who knew Skarsgård could make "on fleek" sound like a fancy French word! Consider us impressed.

"The Diary of a Teenage Girl" is playing in select theaters now.