What is what does tongue in cheek mean?

The phrase "tongue in cheek" is used to describe a comment or statement that is meant to be ironic, sarcastic, or humorous, often in a way that is not immediately apparent. It implies that the speaker is not being serious or sincere, but is instead making a joke or mocking something or someone in a lighthearted way. The origin of the phrase is uncertain, but it is believed to come from the physical act of putting one's tongue inside their cheek while speaking, which exaggerates the delivery of the ironic or sarcastic message.