Maybe this?

Re:Penguin?

A penguin is driving along when he notices that the oil pressure light is on.  He gets out to look and sees oil dripping out from under the car.  He drives the car to the nearest service station to have it evaluated.

After dropping off the car, the penguin goes for a walk.  He sees an ice cream parlor and decides that something cold would really hit the spot.   He orders a big bowl of vanilla ice cream and sits down to eat.  Having no hands, he makes a real mess trying to eat with his little flippers.

After finishing his ice cream, he goes back to the service station and asks the mechanic if he's found the problem.  The mechanic looks up and says, "It looks like you blew a seal."

"No no no" the penguin replies, "It's just ice cream!"

Thank you, I'll be here all week.  Don't forget to tip your waitresses.

Try looking at the origin of the word.  Pen gwyn is Welsh for "white head".