Scotsman phones a dentist to enquire about the cost for a tooth extraction.

£85 for an extraction, sir" the dentist replied.

£85!!! Huv ye no'got anythin' cheaper?"

"That's the normal charge," said the dentist.

"Whit aboot if ye didnae use any anaesthetic?"

"That's unusual, sir, but I could do it and knock £15 off."

"Whit aboot if ye used one of your dentist trainees and still without any anaesthetic?"

"I can't guarantee their professionalism and it'll be painful. But the price could drop to £40."

"How aboot if ye make it a trainin' session, ave yer student do the extraction with the other students watchin' and learnin'?"

"It'll be good for the students", mulled the dentist. "I'll charge you £5 but it will be traumatic."

"Och, now yer talkin' laddie! It's a deal," said the Scotsman. "Can ye confirm an appointment for the wife next Tuesday then?"