Ever bought a beer at CenturyLink Arena in Boise?  You might have thought you got ripped off because of the video above.  A fan shows that a large beer and a small beer are the same size.

The apparent problem of course is a large beer is $7.  A small is $4.  So, the arena was pocketing $3 extra for no extra cost... at least at first glance.

As it turns out, though, the problem was NOT people ordering a large and getting a small.  The problem was the opposite: if you ordered a SMALL you actually got a LARGE!  Free beer without knowing it... sweet!

Thebiglead.com suggests the culprit may be mislabeled cups from the vendor, which happened at the Seahawks Qwest Field in 2011.  (By the way, you may know that CenturyLink and Qwest merged companies, maybe giving some explanation to the vendor issue?)

Here's the official explanation from eater.com:

We received a copy of the YouTube video showing the quantity of liquid served in the 16 oz. beer cup is the same quantity that fits into the 20 oz. beer cup. This is the first time we have been alerted to this fact. Upon our internal investigation this afternoon, we discovered the cups that are marked 16 oz. hold 20 oz. of liquid. Fans who purchased a 16 oz. beer actually received 20 oz. of beer for the 16 oz. price. Fans that purchased the 20 oz. beer received the amount they purchased. We are working with Levy Restaurants to follow up with the cup vendor about the measurement and to determine how long this has been occurring at Qwest Field. We are determined to find a solution as quickly as possible. In the meantime, we will serve domestic beer in the 20 oz. cup at tomorrow's playoff game to ensure all fans receive the amount they purchase, and we will charge the 16 oz. price.

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