Police were left mystified after a pork roast fell from the pants of a "heavily intoxicated" man during a callout on the weekend.

Dutton Park police were called to a local bus stop to find a man who police said seemed "not too pleased" to see them on the weekend, Senior Sergeant Greg Bishop wrote on a police blog on Tuesday.

Note: the pork roast found in the man's pants was uncooked.

They tried to help the "rather large" man to his feet and as they did so, a 2.5 kilogram uncooked pork roast fell from the man's pants.

Seemingly as confused as the police officers, the man asked 'where is that from?' before leaving the bus stop.

The mystery of the pork roast remains unsolved.

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