Jennings' jab was meant for Tyreke Evans after the Sacramento guard won the NBA's rookie of the year award on Thursday.
The 20-year-old Jennings finished third and while he didn't have stats like Evans this year, he's the only one among the top candidates that still playing in the postseason.
The Bucks lead the series 3-2 after stunning Atlanta 91-87 on Wednesday night.
Game 6 is Friday night in Milwaukee. Jennings says if the Bucks win, the rest of the league may finally take notice and begin "Fearing the Deer."