CROSS PLANES: U is for Underoos

Sketch of the cross section in the y-z plane to determine the profiles

Transformers: Rise of the Beasts (2023)

Something to Worry About! - Writer's Digest

CROSS PLANES: Delving Deeper and D&D Next

On the topic of bullpup, i have decided to commit high treason

Why does Iron Man refer to Spider-Man as 'Underoos' in the new Captain America: Civil War trailer? - Quora

Superheroes Joseph Scrimshaw

Peter Parker (Earth-199999), Marvel Database

Why does Iron Man refer to Spider-Man as 'Underoos' in the new Captain America: Civil War trailer? - Quora

CROSS PLANES: Z is for Zoids

Underoos underwear commercial (1978)

Is Marvel screwing up Captain America's new origin by making him a sleeper agent of Hydra? - Quora