There're obviously acting intentionally. Shame them and make them feel awkward in a way that gives you plausible deniability if your manager confronts you. "It's fine, I make dumb mistakes at times too, I'm going to need you to please leave the store while I fetch a mask for you again, thank you for your cooperation!" Use polite language but speak in a condescending tone and take your sweet time "helping" them.

Yes!!! I feel like we should charge for handing them out too. We go through so many..

If it makes you feel better the same anti mask person that came into my starbucks freaked out my manger the first time around all of us. Me to my co worker please just fuck with her drink I don't care lol.