a 17/18cm rubber chicken that can be bought in many places that when you squease will look like its laying a see through rubber liquid filled egg with yolk
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if you take out the rubber egg put some lube in the chicken then put it on the end of your dick squeese all the air out of it then you can Choke the chicken if you will with it like a flesh light
dude i jacked off with one of those Egglaying Rubber Chickens with the egg taken out last night then i came in it it felt soo awesome