When people are being stupid in a group. Collective retardation.
The teacher explained mass defect for the class by showing them a video of cheering Trump supporters.

Dr. Goldberg: Don't forget the mass defect in your equation Doctor Johnson.
Dr. Johnson: Oh, so m=13.267ev-#YOLO+#KillAllWhiteMen then?
by SimTeXa August 10, 2016
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