its not a big deal when people ask you, just have a easy back up story so you dont look like an idiot. I always just tell people i am growing mint leaves, aloe veras ect for gifts for people. And if you ever get called out by someone dont smile, or smirk or anything to make it obvious, remember the first rule to growing is dont tell anyone. And it was good that you didnt call out a manager, keep a low profile.

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wait, watch, see it gets better with time...