I go on an adventure to the jungle with my little stepsister and end up her hard and cumming hard in her mouth

While I go with my little stepsister on an adventure to the jungle and the river I feel like going to pee and something strange bites me on my penis and my shy stepsister doesn't know what to do and to be able to get the poison out of my penis and ends up sucking it very hard until she gets all the milk out of my penis