Chris Pratt vs. Whistling: The Struggle Is Real

For his starring role in the upcoming mega-movie "Jurassic World," Chris Pratt faced many challenges: blue-screen acting, physically draining blocking, wondering if a dinosaur might be in his light.

But according to this latest featurette released by Universal, it turns out that one important skill he'd never mastered before taking the part was whistling:

Chris, who is cover man for GQ's June issue, took time out from his whistle-while-you-work schedule to attempt to teach us how to act ... while drunk. Check out his hilarious, R-rated tutorial here.

"Jurassic World" hits theaters June 12.