Thermoses Jokes

Two [ethnics] both worked in the airport, Toronto, filling up the
planes with gas. They had been doing this for a number of
years.
One day, Mike shouted over to Jim, who was away over on
the other wing. "Jim, some of the gas splashed me and I have
found that it has the flavor of our [ethnic] screech, try it!"
He does, and yells back, "Lets take some in our thermoses!"
So they filled their thermoses and shortly went home.
After a couple of hours,
Mike phoned his buddy, to ask how he was doing with the
booze?
He replied "Fantastic, Mike"
Mike then warned Jim,
"What ever you do, don't fart! I'm phoning you from Calgary!"