Everybody is wondering what position Kenny will give his brother in their new company.
Probably top.
Kenny likes to be the bottom in every sexual encounter.
Company Position
Explanation
Explain Bear
Listen up, buttercup. This joke is all about wordplay and being nasty. It's about Kenny and his brother starting a company, and someone is wondering who is gonna be in charge. Then it twists into a joke about Kenny liking to be on the bottom during sex... with his brother. Yuck! Also, you are a moron.