Cold buttermilk.
The only dirty joke I can think of at the moment is hillary.
Gallagher opened the morning newspaper and was dumbfounded to read in the obituary column that he had died. He quickly phoned his best friend Finney.
“Did you see the paper?” Gallagher asked. “They say I died!”
“Aye, I saw it!” Finney replied. “Where are you callin’ from?”