Shark Tank panelist and self-made millionaire Barbara Corcoran stopped by Elvis Duran and the Morning Show to chat about her new iHeartRadio podcast, Business Unusual.
When she's not busy chatting about her short lived-stint on Dancing with the Stars and filming episodes of her hit ABC show, Barbara works hard as an investor is 49+ companies!
When Elvis Duran picked her brain on how to confidently choose trustworthy business partners, Barbara said insincere compliments and weak handshakes are a telltale sign someone is a phony.
Check out her very specific advice about using your thumb in a handshake below: