A guy driving through Alaska has car trouble. He finds a garage in town, and the mechanic tells him he'll check out the car, and to go across the street to the diner and have lunch during the wait, because it will take about 30 minutes. The guy goes to the diner, then back to the garage in a half hour, and asks the mechanic what's up. Mechanic says, ""It looks like you blew a seal."" Guy wipes his mouth and says, ""No - that was just the vanilla ice cream I had for dessert.""