During his golfing vacation at Martha's Vineyard - President Obama had been slicing off the tee on every hole.

He asked his Scottish caddy if he had noticed any obvious reasons for his poor tee shots, to which the caddy replied:

"Aye, there's a piece of shyt on the end of yer driver. "

The President picked up his driver and cleaned the club face, at which point the caddy said:

"No, the other end."