Rewatching the fight with Neo-Noir Spider-Man vs Tombstone in Spider-Man: Into the Spider-Verse, his second to last punch has the sound effect "APPLESAUCE" plastered all over the background.
Which I don't understand, at all. Because the previous sound effects are a lot more "normal" sounding, being JAB and SLUG, but APPLESAUCE is just out of right field.
Is this referencing something?