Yesterday when I got back from lunch my boss was apparently hitting his afternoon lull.  He was exclaiming how he was so tired he had to think about what he was thinking.  So being the opportunist that I am, I suggested that he run to the gas station to get a 5 hour energy.  We were the only 2 in the office yesterday, so I saw this opportunity to have a brief moment with the office to myself, so I could just relax, and not worry about my boss criticising something that I'm doing.  To my surprise/delight he decides to go get a 5 hour and asks if I want to come with, "No, I'm good!  Don't fall asleep in your car though!"
Curt: "NO! You're coming with me!  Come on, we'll only be 15 min!"

So, not sure what to do, I accompanied him to the gas station which consisted of riding in his car, walking into the gas station, and pretending to look interested at the donut stand while Curt chose the flavor he wanted.  Then after he paid, I walked back out and rode back to the office with him.  My going served absolutely NO PURPOSE. 

Is this odd or normal?  I think it's odd, and I still don't know why he insisted that I go with!