A south-end woman failed to mind her Ps and Qs when it came to drugs.

Police had apparently been watching her activities and were tipped off of a possible purchase Sunday night.

The 52-year-old woman was caught on candid camera, so to speak, buying crack cocaine before hailing a cab, a conveyance stopped by Barrie Police on Sunday.

She’ll get her day in court soon.

Elsewhere Sunday, someone with a pressing need for some stimulation got into fisticuffs with someone who refused to fork the drugs over.

The 45-year-old man went up to another guy downtown inquiring about the purchase, and started to slug it out with the other man when he refused to cooperate.

The would-be buyer had to be taken to hospital by ambulance, and police were of a mind to charge the alleged slugger with assault.

The alleged sluggee wouldn’t talk, and the charges were dropped.