When asked about it later, he winces, then smiles.

I dont think vanity is going to help me, Lucas tells EW.

I dont have Ashton Kutchers looks to lose.

Small Apartments

Credit: SXSW

So, you know, what the hell?

Its that kind of thing.

Lucas go-for-broke attitude also translates to an open-minded philosophy about his career.

I already look like Uncle Fester on a good day, so it doesnt really matter to me.

Then hes planning to move to Los Angeles and live with actress Rebel Wilson.

(SPOILER ALERT:An R-rated plot point lies ahead.)

And he actually took out his member.

Which I wasnt expecting.

Although you dont see it on screen, thats what he actually did.

So the look of shock and fear on my face is genuine.

So what did Lucas say to Stormare afterwards?

I fing ran a mile, he says with a nervous laugh.

I didnt say anything.

I mean, to say an actors got balls quite literally!

That was a different experience for me.

He was a great guy, I really liked him.

But, no, I didnt want to talk to him about his penis particularly afterwards.

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EWs SXSW 2012 coverage