Ok I have a couple of stories. The first one is more like an Urban legend and Ive heard a few versions of it.

A guy has a large tattoo done and only after finishing it does the tatooist find out that the guy has no cash to pay for it. He gets a couple of large friends to hold the guy down and tattoos "I like fish and chips" on his forehead.

I was drinking with a friend one day when I noticed a tattoo on his arm, a love heart with a banner. The banner said Andrew. I asked him about it and he told me it was supposed to be his wifes name there but a train was going past the parlour when the Tatooist said "What name?" and he mistook her as saying "Whats your name?". So thats why he has his own name in a love heart on his arm <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />.

I will call you "Squishy", and you will be my squishy! OW! BAD SQUISHY! - Dory, Finding Nemo