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When i was 21 i worked in a Walgreens Liquor. It was a separate store, different entrance, from the main Walgreens, so it didn't have all the traffic and i was the only one working. This regular couple came in. As i was ringing them up something was bugging me, so i look up and they were rubbing against each other and groping each other, right in front of me. These people were waaay older than me, and not at all attractive (not that it would've made it ok, just made it worse). I was so grossed out i refused to look at them. They tried telling me it was just a joke, i wasn't amused and still refused to look at them or speak to them and rushed them out. Ugh.. i'm still scarred.