Comedic Underwear Exposure
Not even Kamen Riders are immune to this trope.

"I see London! I see France! I see [Insert Name Here]'s underpants!"
Traditional prank

Classic underwear reveal, usually accidental, and tends to be accompanied by the above rhyme in children's shows. Generally involves Stock Underwear, especially Goofy Print Underwear. This trope is usually for comedic intent, catching a character in their most embarrassing state. There's also Cringe Comedy present, as the situation is usually awkward.

Compare Panty Shot. If revealing a character's underwear is used to defeat or incapacitate a character, see also Defeat by Modesty.

Alternative Title(s): Standing There In Underwear, I See London