Scottish insult: "your mother is a drug dealer"
Counterpart to "yer da sells avon". Often used in verbal attacks, can also be used in retaliation to previous insult.
Yer = your
Maw = mother
Punt = sell/offload
Coonsil = council; cheap, very low quality drugs (usually cocaine) typically prepared in someone's kitchen/basement
See also:
yer da sells the avon