Fertiliser is wonderful stuff
At the time I lived next door to a neanderthal Chelsea supporter. When they went away on holiday, I decided to write on their lawn in fertilizer.
So on their return from two weeks in the sun, their lawn had sprouted lovely, lush, green grass spelling out 'LFC'.

Length? About six foot.
(GingerIrishTosser isn't dead yet., Fri 8 Oct 2010, 11:52, 4 replies)

Its better
If you do it with glyphosate.
(mersault, Fri 8 Oct 2010, 12:19, closed)

Reminds me of the WW2 story
Of a German POW, at the end of the war, awaiting repatriation. He was allowed to do gardening around the local village to keep him busy, and alleviate boredom. The locals all were impressed by his dedication and results. Time moved on, and he went home. Next spring some of the front lawns yielded a strange surprise for the victorious locals. Swastikas on the lawn, courtesy of the bulbs he had planted before he left.
(Sir Tainley Barking Ezekiel 23:20, Fri 8 Oct 2010, 13:07, closed)

I did think of using weedkiller
but destroying the lawn of a 6+ foot skinhead isn't advisable, especially when you're a short-arsed weedy bloke like me.

Still, you could actually see the cogs turning as he tried to work out what to do - I hadn't destroyed his lawn, only made it green!
(GingerIrishTosser isn't dead yet., Fri 8 Oct 2010, 13:16, closed)

Scuffing your feet on snowy/frozen/damp grass also works quite well
I scuffed a stickman on the damp grass outside my halls at uni which lasted a few weeks surprisingly.

We went back for a 'reunion' a few years ago when it was snowy and as we were now grown up and mature drew a giant cock and balls on the grass outside the library.

I do like the fertiliser idea though.
( thistle, Fri 8 Oct 2010, 20:17, closed)