But the "Real Housewives of New Jersey" star says she's not "that person" and is only mean because she is attacked constantly by her costars.
Anderson Cooper invited Teresa on his talk show, where he confronted her about the disparaging remarks she made about castmate Caroline Manzo during the "RHONJ" Season 4 reunion ... which airs this Sunday on Bravo.
Anderson was quick to point out that he is constantly attacked, but not mean.
Has Teresa's mean girl persona eliminated her lack of compassion, too? See how she responds to Jacqueline Laurita's claims that Teresa failed to reach out when Jacqueline's son was diagnosed with autism.
Finally, Teresa addressed rumors that she is getting a spin-off show. Watch what she says below.
Teresa's full interview with Anderson airs today.