This guy is really into blow up dolls and rings his mail order supplier and says he wants something absolutely realistic.
The supplier says, "I have just the thing, `Life-like Tina`, So realistic you can`t tell the difference!"
The guy orders one. Meanwhile the supplier is looking at the box and cannot believe how realistic `Life-like Tina` looks, so he decides to blow it up. Once inflated he gets really turned on and thinks, "What the hell!" and has sex with the doll.
Washing it afterwards, he neatly packages it and sends it out to the guy.
A month later the guy calls up, "You know that `Life-like Tina` blow up doll you sent me? I cannot tell you how happy I am."
Supplier: "That`s great!"
Guy: "Yeah, it`s a totally believable experience."
Supplier: "Realistic then?"
Guy: "So realistic, I got syphilis."