The He-Boy-Girl-Dislikers club is very strict about security.
They don't want to risk their tree-house being contaminated by cooties, cosmetics or any other girl-borne plague.
Each week they change their secret password to prevent infiltration.

Decipher the clues to determine what this week's code is?

catchy tune in an ad + wedding clangers + caped crusader + what your nose does