Donkey rides into town on his ass and dismounted. He walked behind his mount and lifted its tail and kissed it right on its butt.
An old timer ( Markabilly) asked "What did you do that for?"
"I have chapped lips." said Donkey.
Then Markabilly looked at him and said "And kissing an ass on his butt makes them feel better, right?"
"No" said Donkey looking at Markabilly "It just stops me from licking my lips."