Driving down the highway at sixty miles per hour:
Mary: "Mom? Mom! MOM!! STOP!"
Me: "What is wrong? What is it?!"
Mary: "I just saw some garlic mustard with its white flowers growing on the side of the highway!"
Me: "Mary, you can't scream like that about a PLANT. You about scared me to death! That is not an emergency."
Mary: "But Mom, garlic mustard is an invasive species! We need to go back and pull it out!"