Reminds me of the 'oral sex frog' joke
A woman sees a sign in the pet shop ' Oral Sex frog,£100'
She asks the shopkeeper what it is about and he tells her '' You lie on the bed and put the frog 'down there' and it gives you oral sex.
She pays the £100 and take the frog home, strips off , lies in bed and puts the frog between her legs. It does absolutely nothing, So she rings the shop to complain. The shop keeper says '' OK, I know what is wrong I will come round and sort it out''
The shop keeper arrives and he tells her to strip off again and lie on the bed with her legs open. She does as he says, the man looks at the frog and says to it ''Now look closely, this is the last time I show you how to do this!''