Ok so my friends front wheel popped of. And won’t go in. What should we do?

https://i.redd.it/kib4lutpsdw11.jpg via /r/bikesgonewild https://www.reddit.com/r/bikesgonewild/comments/9u79kw/ok_so_my_friends_front_wheel_popped_of_and_wont/?utm_source=ifttt