Sometimes I wonder!

Okay, so I have been watching my nieces a couple days a week while I have been off on Maternity leave.. I hear some of the strangest and funniest things through out the day from either Oakley, Erika and even Lexi... Well today, I was getting the kids their lunch and giving them drinks.. Erika tipped her drink over and Oakley says..."Man, thats gonna leave a mark!" What the heck? Where did this come from? I love listening to my little ones.. They totally make my day!