You Know You Arrived at the Bachelor Party Too Late When ...

• You say hi to the bachelor, and he greets you with a somber look and a finger-in-the-air "just a sec" gesture, then shuffles past you to the bathroom.
• You get off the phone with a friend a few minutes later and find out that while you were away, the bachelor came out of the bathroom, was handed another drink, threw up in his drink,* then headed back to the bathroom.

Happy wedding, man! * which was still sitting on the bar. However, I must give credit where due: The bar itself was left spotless.