Hernandez's teammate, Justin Turner, who reunited with Kike in Boston with the Red Sox, asked KH for his most embarrassing moment during a Major League Baseball game, and he dropped a bombshell (yes, pun intended).

The Sox utility man told Turner he was taking antibiotics for a tooth infection a few years back, and one of the side effects of the medicine was ... you guessed it, diarrhea.

Kiké recalled the crappy incident, saying he was so pumped after the team got a big out in a pressure-packed situation in the National League Division Series (NLDS), he screamed, "F Yeah!"

"I was DHing and I thought I farted," Hernandez said to Turner. "I went out to lead off the inning. I struck out in three pitches."

He continued ... "When I went in the dugout, I went straight to the bathroom, pulled my pants down, completely sharted."

"So you're saying you misjudged a fart," Turner asked Hernandez. "Uh, no. What I'm saying is I s*** my pants during a game in the playoffs," Hernandez replied to Turner.