Alright, now he's starting to feel left out. Why's he the only one that hasn't seen this?

Oh, right, because he can't sit still enough for most movies. The number of movies he's successfully managed to watch from beginning to end can probably be counted on less than two hands...and that's probably because they were animated or dark comedies. Junkrat startles at Roadhog's comment before he has the chance to sit down between them, having given Fareeha the head-start to get comfortable.

"Wait--wot?"

Surely he means as reference to something else. He'd know if he was in a movie! Most likely.