Red Dog
An enterprising genius nicked a pot of the thick yellow indelible paint used to paint yellow lines on roads, and painted MR THOMAS IS A RED DOG'S KNOB in foot-high letters across the bridge in front of the school. From that day forward he was known as Red Dog. Or Le Chien Rouge if you did A level French. It's still there to this day.

(It’s the detail of "A level" French that does it for me. Hee hum. –Susan.)
written by RL*M, approved by Susan