The man, Atthaporn Boonmakchuay, is said to have tried desperately to break free after the huge snake attacked in the bathroom of his home in Chachoengsao, east of the capital Bangkok.
He reportedly reached down with his hand after feeling a sharp bite – only to discover the serpent’s jaws clamped around the tip of his penis.
Atthaporn, 38, is said to have shouted out for his wife as he tried in vain to dislodge the 11ft python.
However, he reportedly managed to tie a rope around the snake’s head and tie it to the bathroom door before collapsing.
Atthaporn was eventually rushed to the hospital where he was said to have been stabilised.
Some reports indicated that the snake swam up pipes to the house before emerging in the bathroom.
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