Sensitive readers may want to look away.
This may have been a mistake.
DeVito took a picture of Fallon’s grimacing face alarmingly close to his foot and posted it. Naturally, fans everywhere freaked out.
(DeVito’s WhoSay account, incidentally, is filled with pictures of his foot, so if you’re into that sort of thing, please dive deep.)
DeVito’s currently starring in It’s Always Sunny in Philadelphia, probably the most appropriate venue for his troll foot given that he once actually played a troll demanding a “troll toll to get into that boy’s soul.” Watch the full clip from The Tonight Show below.