Bo Jackson -- I'm So Old ... It Hurts to Pee
Bo Jackson 'I'm So Old ...' It Hurts to Pee
Bo Jackson used to be the king of TWO sports ... now, he's got problems handling a #1.
Jackson called in to "TMZ Hollywood Sports" and told us about how he's getting his 52-year-old body ready for his annual charity cycling event, Bo Bikes Bama ... but he's moving a little slower than he used to.
"I got up this morning and went to the bathroom to pee ... and pulled a muscle," Bo joked.
But the real headline could be that Bo thinks he's gonna get his "BUTT KICKED" in the ride by his former nemesis Brian Bosworth -- who's announced he's participating this year.
Check out the clip ... Bo explains how the former rivals reconnected after nearly 30 years for a great cause -- and why he's confident Bosworth will finally get his revenge.