Used to cut grass, however as the term "to cut his grass" means to try and get involved with a girl he is going with or interested in, to do this u would be called flymo.
"I like his girl, time for some flymo action"
by Johnny Vodka November 17, 2003
An Electric razor. (because it mows)
Said of a woman with untrimmed hair in a bikini - "She needs to use a flymo"
by ultimatepa January 12, 2012