[Erte]

I've managed to do this a number of times. My cock is about 8 inches long so you don't have to be hung like a horse. It just takes practice and patience. The first few times i tried it I could only manage to flick my tongue over my head but after a few weeks I could fit the whole bell in and a few inches. It DEFINITELY helps to have a wall to support your back, or if you have a slanted roof try "walking" your feet up the wall, inching your cock closer to your open mouth as you do so. Just imagine it's a sexy ladyboy!