Why I should never drink caffeine after 3 PM

I drank iced tea at dinner last night without remembering the caffeine content.  At three this morning I was trying to convince my dogs to wake up and play with me. They were not amused. Blue got up from my bed in a very disgruntled manner and moved downstairs. (Shades of my marriage!) Blondie refused to even lift her head off the couch and pretend that she heard me. So I was forced to lie in bed and wonder when I lost control of the pets in my life. And then the answer came to me.  I never had it.