[ ignoring the loud clatters in the background, itadori tilts his head. ] ... You seriously don't think that was funny?

[ he's asking for research purposes— since itadori pulled the exact same prank on his friends back home. now that he thinks about it, they kinda reacted the same way hizen did. there was no laughter, and he certainly wasn't welcomed with open arms; just mild disgust and raw anger.

he clears his throat- ... a bit nervous now! ]

Okay, let me explain it in another way. What if it was your friend? Wouldn't you be happy to see them alive again?