Super Smash Brothers Ultimate - Basically means "never ask me for anything ever again."

Friendly reminder that Sakurai himself made this game precisely to see his favorite characters fighting alongside Nintendo's most iconic characters in one shared universe, so he of all people understands the feeling better than anyone else in the world, so if even he can hold back and stay professional about it even though he has actual power to do otherwise, no one else has any excuse whatsoever.

in other words, never ask him for anything ever again.