Cherie Blair has phoned chat show Richard and Judy to complain her husband, Tony, never buys her flowers.
Mrs Blair said she had got herself in the "flower-less" position
The prime minister revealed last week he had never sent his wife flowers, prompting a discussion on the Channel 4 programme - do men send flowers enough?
Mrs Blair said her mother had been watching and had urged her to phone in to "show up her son-in-law".
The prime minister's wife told TV hosts Richard Madeley and Judy Finnigan she "must have failed".
"I've got myself in a position because if he did buy me flowers he would say I was being suspicious," she said.
The presenting duo were in the middle of a interview with Chris Evans when Mrs Blair telephoned.
Mr Madeley asked the mother-of-four whether Mr Evans could send her a bouquet, to which she replied: "Sorry, I'm taken."
Instead Mr Madeley offered to send flowers to Downing Street.
A spokeswoman for the Prime Minister's wife later said she rang the show after she was promised on-air a bunch of flowers if she called.
Mr Blair made the admission as part of a fly-on-the-wall documentary made for Channel 4's T4 programme aired last Sunday.