im not sure but i think it involved applying honey water to the butthole of the animal with a q-tip. A quick search for prolapse on the forum should give ya some good advice.

...ok, found a better one. soak the frog in a sugar water solution, preferably with honey, for a couple hours. This is in the case that it was caused by straining out a monster turd or an impaction (hope ya dont use gravel or rocks, they can eat pretty big rocks)

If there is reason to beleive that it is protozoan related, then use a unflavored pedialyte solution to soak in.

If that doesnt cause the animals anal wall to retract and suck the guts back inside its butthole, see a vet.