Male/Female, weight, age, and any other info would be alot more helpful to identify what this is but i can tell you right now that it is gonna end with a trip to the vet.
On my bp there is like a huge pink thing coming out of his butt and i have no clue what it is
Did this happen while you were holding him? Sometimes, if they get really stressed, they will evert their sexual organs. (Even females can do this to some extent) If it showed up...and then went away when you put him back in his cage...then everything should be fine.
If it's still there even while the snake is "relaxing" then it may be a prolapsed cloaca and needs a vet's attention immediately.
Here's a couple links to help you find a qualified herp vet in your area:
YEAH. What Judy said. Sounds like a prolapse to me. very serious stuff, requiring immediate attention.
ALL THAT SLITHERS - Ball Python aficionado/keeper
breeder of African soft fur Rats. Keeper of other small exotic mammals.
10 sugar gliders
2 tenrecs
5 jumping spiders
paludarium with fish
Brisingr the albino
Snowy the BEL
Piglet the albino conda hognose
FINALLY got my BEL,no longer breeding snakes. married to mechnut450..