make a laughingstock of

make a laughingstock of (oneself or something)

 and make (oneself or something) a laughingstock
to make oneself a source of ridicule or laughter; to do something that invites ridicule. Laura made herself a laughingstock by arriving at the fast-food restaurant in full evening dress. The board of directors made the company a laughingstock by hiring an ex-convict as president.
See also: laughingstock, make, of

make a laughingstock of

Lay open to ridicule, as in They made a laughingstock of the chairman by inviting him to the wrong meeting-place, or She felt she was making a laughingstock of herself, always wearing the wrong clothes for the occasion . The noun laughingstock replaced the earlier mockingstock and sportingstock, now obsolete. The idiom was first recorded in 1667.
See also: laughingstock, make, of