This is from Itadaki High Jump episode 17 aired on 2 December 2015 where all the members of JUMP doing various challenges in the studio.
There's this time when Yamada asked the members to choose the challenge for him
Then Nakajima immediately chose one
And among the many challenges there, the one he chose was...
Nakajima-kun... why did you choose the one that has the word painful in it? Not that I mind though, because Yamada's reaction was super funny :P
*credit to 10-JUMP for the subbed video