CAP

A way to announce or say that some one is lying, untruthful, false, dishonest, mendacious, perfidious, deceitful, deceiving, deceptive, duplicitous, dissimulating, dissembling, double-dealing, two-faced, Janus-faced, guileful, underhand, disingenuous, crooked, bent, sneaky, tricky, hollow-hearted, ect. Most of your best friends will likely say this to you.

Person 1: I have a loving, happy family which I enjoy hanging out with them. They love me and I love them.
Person 2: Hahaha CAP.