Appreciate Bernie Kropp and other incredibles memes.

Bernie is Dash's long-suffering teacher. He is often a victim of Dash's practical jokes that Dash plays to drown his frustration of being forbidden to compete in sports. Bernie obviously has claimed millions of times that Dash puts tacks on his chair during class for some reason he does not know because he seems infuriated the last time it happens;
One year when he is forced to teach Dash again he sits on his chair...and on a tack; upon impact he jumps out groaning in pain. He instantly accuses Dash of the prank and sends him to the principle's office to investigate. He eventually suspects that Dash has magic powers, due to his discovery of the incident; his hidden camera caught a blur from Dash's seating to Bernie's chair right before and after the prank; that lasts for about 0.002 of a second. Luckily for Dash, Bernie is dismissed as just being over-reacting and paranoid, namely because the recording didn't record too well his movements. When Dash is absolved of any responsibility to his parents and the school board, in reply Bernie begins throwing a tantrum in the principle's office.

Incredibles Memes
Bernie's Life Story[pixar.wikia.com]