Lay it on with a trowel
To crudely labour a point, or flatter in an overly generous manner.
From Shakespeare's As You Like It, 1600.
LE BEAU: Fair princess, you have lost much good sport.
CELIA: Sport! of what colour?
LE BEAU: What colour, madam! how shall I answer you?
ROSALIND: As wit and fortune will.
TOUCHSTONE: Or as the Destinies decree.
CELIA: Well said: that was laid on with a trowel.
See other phrases and sayings from Shakespeare.