Uber's CEO wrote a frat-like letter to employees about how to handle sex, drinking, and kegs at a company party

"Do not throw kegs off tall buildings" seems like an obvious rule.

But maybe not an Uber.

In advance of a 2013 company party in Miami, CEO Travis Kalanick felt it necessary to spell it out for employees, along with a whole host of other do's and don'ts.

On Thursday, Recode made public an internal email Kalanick sent to his hundreds of employees ahead of the 2013 bash. Reading a lot like what a college fraternity president might send out to his brothers, the email spelled out in sophomoric terms rules not only about drinking and what not to do with kegs but also about sex.

Sex with Uber colleagues was definitely in the don't category, Kalanick wrote, unless "you have asked that person for that privilege and they have responded with an emphatic 'YES! I will have sex with you'" and "the two (or more) of you do not work in the same chain of command."

Seemingly commiserating with employees about the rule's implications, Kalanick added, "Yes, that means that Travis will be celibate on this trip. #CEOLife #FML."

FML is short for f**k my life.

He also helpfully noted that puking on the premise would incur a $200 fine.

Uber representatives did not immediately respond to requests for comment about the leaked email.

The leaked email comes amid a months-long investigation into Uber's workplace culture. The company acknowledged on Tuesday it had fired over 20 employees as a result of the investigation into sexual harassment and other bad behavior at the company.

The spotlight has been on the company's bro culture since Kalanick launched an internal investigation in February after a former employee, Susan Fowler, said in a personal blog post that she was sexually harassed and experienced gender bias during her time at the company. The company has been interviewing its employees internally, as well as having Perkins Coie and Holder investigate the company's workplace.

You can read Kalanick's full memo to his employees on Recode.