My horse is getting tired...

So, I just had to share with everyone a new line that I heard this weekend which I highly enjoyed. I went grocery shopping on friday night. BBBuuutttt forgot to get the bacon for weekend breaky. oops. Mom, then began trying to bake muffins saturday morning and didn't have flower. So Ray gallantly ran off to the grocery store bright and early saturday morning to save mom from having to get presentable to go out. After doing a few other things that morning (not to mention the amount of stuff he does for us on other days too) we are discussing something else that was missed/or needed and he finally says "I'm sorry, but i'm not going out to get that. My horse is getting tired." at first I didn't understand. But after a minute of mulling it over in my head it clicked. From being the knight in shining armour running around, saving the damsels in distress (or was it that he just reallllyyy wanted muffins...?) his "white horse" was tired.