How Can I Tell If I'm Spacey?

Needle protocol seems to be running smoothly now and the pharmacy at Warren Place is in full swing. I decided to settle back into summer vacation with gusto this morning. I hopped the train into the city to B&H photo to finally buy my new canon snapshot digital camera. So exciting. It's charging right now. But as I left with a list in my hand of other errands to complete, I became so tired and weak that I decided I had to dash to the nearest train. Is that the drugs or I have I just become so incredibly sluggish that I can't handle more than one errand?