I had a friend use used to race track. He accidentally made his thumb short by about 1/8 of an inch oiling his chain one night.

After returning from the hospital, he pried the plug off the end of his handlebars, put the end of his thumb in the handlebars and put the plug back in.

We all thought this was real cool until he sold his bike a couple of years later. When someone asked him about his thumb, Greg realized he had left the piece of his thumb in the handlebars when he shipped the bike. He didn't have the nerve to call the guy and tell him about the surprise in the handlebars.

As Sheldon says...be careful lubing that chain.