Seamus and Murphy

Seamus and Murphy are at work one morning on a construction site. "I fancy a day off," says Seamus. "The races are on at Caharciveen."
"The foreman will never let you go," says Murphy.
Seamus spots the foreman making his way towards them. "Watch this," he says to Murphy and hoists himself up and hangs by his legs from one of the roof beams. When the foreman arrives, Seamus starts shouting "I'm a light bulb! I'm a light bulb!"
The foreman shouts, "Seamus! You're either mad or drunk! Get yourself off home and don't come back 'til your right in the head." Seamus picks up his gear and trots off.
The foreman turns around and notices Murphy packing up his tools. "Where do you think you're going?" he asks.
"If you think I'm going to work in dark..." says Murphy.

Pete