Congratulations, Scott Disick! After going through image rehab, you've successfully re-established yourself as a lying, boozing douschebag. Way to keep it classy, pal!
After promising Kourtney that he wouldn't drink on his "business trip" to Las Vegas, Scott quickly started downing the cocktails and making an ass of himself in public again on Keeping Up With the Kardashians (Sun., 10PM on E!).
Scott couldn't resist the temptations of Sin City. And even though his night of drinking and boss-slapping debauchery was caught on tape, he lied to Kourtney after he got back home, claiming that he behaved himself and stayed in control.