Green’s Dictionary of Slang

a persuasive, talkative shopkeeper.

1840

‘Monmouth Street’ in Lover’s Harmony No. 19 148: The lipeys that you meet there, / You’ll own their dealings very fair, / With gammon they’ll get you in a line, / ‘Py Got a’ Mightish dish is fine!’ / With that a coat on you they fix, / Just big enough to cover six, / Then cry ‘Py Got, it fitsh you neat, / ’Tis de greatesht pargain in Monmouth Street!’.