"Tongue in cheek" is a phrase used to describe a statement or action that is not meant to be taken seriously. Similar expressions include "tongue in mouth," "wink and a nod," "tongue in lip," "wry humor," and "ironic tone." Other phrases that convey a similar meaning include "sarcastic tone," "mock seriousness," and "satirical remark." These expressions are often used in humorous or ironic contexts, and are a way to playfully poke fun at a situation or person without causing offense. They are a useful tool in everyday conversation and writing, and add a touch of wit and humor to any discourse.