Bottle flipping, bottle tossing, the bottle flip challenge, water bottle toss challenge, or water bottle flip challenge - regardless of the name, your students are most likely familiar with it and driving teachers, parents, and community members a little crazy flipping their half filled water bottles and trying to land them upright in the classroom, cafeteria, at recess and outside of school. Here is a video of my husband demonstrating (sidenote, I'm really terrible at it!) Just this morning I watched a group of students walking to school stop and attempt to flip a bottle they had placed on an upended recycling