Step 1: Locate a Firehose
Important: Make sure it's not a garden hose, those just don't have the same oomph.
Continue to Step 1 and a Half: The Fine Art of Siphoning
Step 2: Suck Up the Water
Warning: Don't get too close to the nozzle, or you might get a face full of water. Or a face full of regret.
Continue to Step 2 and a Quarter: Water Sipping Techniques
Step 3: Drink Like a Boss
Tip: Try to avoid drinking with your eyes closed, it makes you less intimidating.
Continue to Step 3 and a Half: Firehose Fu
Step 4: Breathe In Through the Nozzle, Out Through the Mouth
Caution: Don't do this step if you are prone to drowning.