Brief Encounter

[Enigma]

A man had a 17 year old son who was a bit mentally backward. Not seriously, just slightly. They lived near the top of a tower block. The boy was showing an interest in sex so the Father bought him one of those blow-up dolls so he could self educate himself. Next day the boy was in his room doing his "lessons" when he suddenly screamed out "Dad"," Dad". Father rushed in and saw the boy in floods of tears. "Whassamatter" he demanded. The boy said "My girlfriend has committed suicide" The father as puzzled by this, "suicide?" he said. Yeah" the boy replied "I gave her a love bite on the bum and she gave a huge fart and flew out the window"