Now this is my kind of man! Back in the day we called this "two-fisted drinking" - not that I ever did it MYSELF mind you. But, let's face it, you have two hands - might as well use them both to hold cocktails. Especially when you are extremely thirsty and the drinks are tiny.
Really, one should think of this as "overachieving" or "multi-tasking" while at the bar. As Martha would say ... "It's a good thing!".