Two dim wits in a pub, Jack and Fred. Jack says to Fred, "See that bar lady over there Fred?" "Yes" says Fred. "Aint she gorgeous?" Asks Jack. "She certainly is, replies Fred, but you don't stand a chance of pulling her though" "Why". Asks Jack. "Well, you see that other bar lady over there? Fred replied, the bar lady you fancy would like to take the other bar lady back to her place, strip her naked and make mad passionate love to her" "Why on earth, asked Jack, would she do that?" "Because, repiled Fred, she's a lesbian" "Well I'll be dammed, said Jack, I must be a lesbian too!"