To force or impose something unwanted or worthless on one. A noun or pronoun can be used between "foist" and "off." Why are you trying to foist all of these old hats off on me? You're cleaning out your attic, aren't you?With Hollywood always foisting garbage off on us, it's a breath of fresh air when a quality film appears in theaters.
foist off on
v.
To force something, especially something unwanted, worthless, or false, on someone: She foisted off the furniture on the new owners. The peddler foisted his wares off on the unsuspecting crowd.