Even more.

Me: "Okay, I'm going to need you to go down to another classroom to pick up the other friend!"
4th grade boy: "Okay!!"
Me: "You can't run, just walk."
4th grade boy: "Ohhh, ...ok!! Can I skip??"
Me: "Nope, no running, no skipping, only walking."
4th grade boy: "Oookaaay."
--2 minutes later the boys come in, red faced and breathing heavy--
Me: "I thought you weren't going to run!?"
4th grade boy: "I didn't!"
Me: "You didn't run? Then why are you red?"
4th grade boy: "I didn't run, and I didn't skip! ... ... ... I galloped."