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1.
Trot on is derived from the phrase jog on which featured in the 2004 British film "The Football Factory," usage varies, however it is normally used to tell someone to go away or get lost, it is rarely used with malice.
citizen 1: Hey mate, you got a filter I can nab?

citizen 2: Trot on son, use a roach.
by Dubs_UPCSC February 05, 2009