The meaning of "full of shit" is:
not telling the truth, exaggerating.

What is the definition of "full of shit"?

"full of shit" means

not telling the truth, exaggerating.

Example sentence:

You danced with three different guys at the nightclub last night? Come on, you’re full of shit! I don’t believe you.

Shelly told her friends that she won a million dollars at the casino. They all thought she was full of shit

Media: