It's officially Social Media Week in New York, and there are lots of informative panels and networking events to attend.

But on Monday, social media insights firm Mashwork got things started on a lighter note with a beer pong tournament held at WeWork Labs. 

Past years' participants have included professionals in PR, marketing, and advertising, as well as the founders, CTOs, and engineers from a wide range of tech companies. 

Uber, Venmo, HowAboutWe, and Twitter were among the companies sending teams to this year's tournament. 

It looked like a lot of fun.

All of the booze and games were for a good cause. Mashwork asked a $20 donation from each of the 16 teams entered in the bracket, and those who participated in free play were asked to donate $3. In the past, the money has gone to Hurricane Sandy relief and the Bill and Melinda Gates Foundation.

This year, it's going to charity:water. Venmo made a separate donation of $500 to the cause in the name of the winner. 

The team from Founder Shield, a company that provides insurance for startups, was victorious this time around. Twitter came in second, losing in a very heated final match.  

The two final teams put the competition aside to pose for this photo with the bracket and the organizers from Mashwork.

Participants took to Twitter to document the night, like the social media professionals they are. 

Line em up @mashwork @wework for #smwbeerpong #smw14 #smwnyc

— Kimberly Taylor (@hotlead) February 18, 2014 

How I know my industry is great? #SMWbeerpong thanks @uber @venmo #WhereDoISignUp #SMWNYC

— Katelyn Rice (@kricekate) February 18, 2014

And again the next day to complain about their hangovers. 

#smwbeerpong was super fun but methinks it's turned Tuesday into a #workfromthecouch kind of day...

— Carl Niedbala (@carlniedbala) February 18, 2014

I love the silence in the @mashwork office today. #smwbeerpong #themorningafter

— Edgar Alanis (@edgaralanis) February 18, 2014

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