Spieth takes a chug from the Jug

Spieth takes a chug from the Jug

Masters and U.S. Open Champ Jordan Spieth came up one stroke shy of making the British Open playoff but that didn't stop him from taking a chug from the Claret Jug.

Open winner Zach Johnson must have felt particularly gracious because he let Spieth do this:

This picture was snapped by Johnson's caddie Damon Green and as you can see, Johnson looks pretty amused.

Bigger question? What did Spieth drink out of the Jug?