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Invent a weird twitch (Amusement Potential: 5-10 minutes) Adopt a bizarre twitch (e.g. flicking your head irregularly, twitching with eye or busting out sporadic cough noises) and try it out when you go shopping.

Make a low buzzing noise (Amusement Potential: 15-30 minutes) Hours of fun in libraries! Keeping a totally straight face and looking nonchalant, make a low pitch humming/buzzing noise and see who reacts.

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