The Goblin
A woman runs out of her house one morning and catches a strange little man at the bottom of her garden.
"You're a goblin," she says, "I caught you and you owe me three wishes!" "OK, you caught me fair and square, what's your first wish?" "I want a huge mansion to live in." "OK, you've got it." "My second wish is a Mercedes." "OK, you've got that too." "My last wish is a million pounds" "OK, you've got it. But to make your wishes come true you have to have sex all night with me." "OK then, if that's what it takes"
Next morning the little man wakes the woman up.
"Tell me," says the man, "how old are you?" "I'm 27", she replies
"Good grief," says the man, "27 and you still believe in goblins"