tongue-in-cheek

adjective
UK /ˌtʌŋ ɪn ˈtʃiːk/
US /ˌtʌŋ ɪn ˈtʃiːk/

Saying something funny in a way that is not serious.

Her tongue-in-cheek comment made everyone laugh.


OTHER MEANINGS

2. Done as a joke rather than seriously.

He made a tongue-in-cheek promise to eat a hundred cookies.

3. Said with a teasing or ironic tone.

The sign's tongue-in-cheek warning said 'Beware of the cat.'

4. Not meant to be taken literally.

Her tongue-in-cheek advice was to wear pajamas to work.