Is a phrase like "what the hell" and "what the fuck" but is often used as a way to avoid saying phrases like those two. It can be considered a kiddish saying.
Just tell me, what the curlywig, you are talking about. What's your angle? What's your point you are tryna make?
What Manfred Mann's Earth Band wrote in their song, Blinded by The Light. But bro, the bird is a player.
Producer: So, whatcha wanna write in this song?
Manfred Mann's Earth Band: Little early birdy gave my anus curly-wurly.
Producer: That's totally reasonable.