If you are a high school sophomore, soon-to-be-a-but-probably-not-yet junior, and you bring a water gun (‘squirt gun’ in Mr. Lucker’s youthful vernacular) into Mr. Lucker’s classroom on the last day of class, and Mr. Lucker watches you (pseudo surreptitiously) fill said squirt-gun from a water bottle, he will wait until you have jussssst about finished reloading before he confiscates the squirt gun by asking you for it.
Then, just so you understand where Mr. Lucker is coming from, once you sit down, he will silently empty said confiscated water gun by watering the potted plant sitting on his desk while you glare at him, he looks back at you, and everyone else is watching for your reaction.
Ostensibly, the squirt gun (sans water, of course) could be returned to you during the customary last-day teacher escort to the busses .
Unless, of course, you pout about it, asking Mr. Lucker repeatedly when you will get your water gun back, and when told that he is under no obligation at all to return said squirt gun to your possession, you walk out of his classroom and stomp around the hallway in a snit, complaining over and over “You got my water gun! When am I gonna get it back”!?
At this point you, and the rest of the class, understand that Mr. Lucker doesn’t abide last day shenanigans. Even in the last period on the last day. Especially the last period on the last day.
Class dismissed. Have a nice summer.