Green’s Dictionary of Slang

Christopher Lee n.

also Christopher

[rhy. sl. = pee n.¹ (2)/wee n.; ult. UK actor Christopher Lee (b.1922)]

an act of urination.

1998		R. Puxley Fresh Rabbit.
2003		B. Dark Dirty Cockney Rhy. Sl. 38: I got worried when he sat on my face and asked if he could do a Christopher.