Derek Jeter tried to convince President Obama he's still a pretty young guy ... despite what the sports media may think.
Obama responded by KEEPIN' IT REAL, SON!
It's a pretty great clip ... Obama sat down with the Yankees legend for an interview with "The Players' Tribune" -- and was trying to get some retirement advice from Jeter.
That's when Jeter complained that sports media labels people as "old" when they hit age 30.
Obama's response is pretty hilarious.
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