Just in case you missed it, James Corden debuted his first-ever primetime carpool karaoke special on CBS last night at--wait for it--the totally reasonable hour of 10 p.m.

His VIP singing guest? The one and only Jennifer Lopez (who, btw, is totally OK with you calling her J. Lo.). In the clip, the pair cruise around LA singing her top hits including “Love Don’t Cost a Thing,” “Booty,” and “Jenny From the Block,” with James on falsetto and Jenny busting out her best passenger seat dance moves.

Still, the best moment actually had nothing to do with singing. It happened when James decides to steal J. Lo.’s phone and prank text the most famous person in it: Leonardo DiCaprio. “Hey Baby, I’m kind of feeling like I need to cut loose. Any suggestions?” the host asks the Oscar winner from her phone.

Watch the clip and cry-laugh at Leo’s response.

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