Possible Clues:

• Go largely topless when drunk - grotesque sight!
• Figure from the gutter given to spouting
• Ugly cathedral feature
• An outstanding feature of Gothic architecture
• Grotesque carved face as old rainwater spout
• Lad's heading off inside to wash mouth out, repulsive beast
• Grotesquely carved spout
• Ugly waterspout
• Quaint building decoration
• Medieval gutter spout made of sculpted grotesque figure