Grasshopper noun used as a humorous form of address to someone being instructed in cod-philosophical truths UK From the US television series Kung-Fu, 1972–1975.
Look hard enough at the past, Grasshopper, and you will find the seeds that become tomorrow’s mighty acorns. — Andrew Nickolds, Back toBasics, p. 175, 1994
He has the air of wisdom and good humour of a guru: I half expect him to start calling me Grasshopper. — TheGuardian, 24 July 1999