David Ortiz is immune to the taunting of Astros mascot Orbit

The laser-like focus of David Ortiz has led to some of the most memorable postseason moments in Red Sox history, so it should come as no surprise that he's just as unflappable while warming up on deck.

Try as he might, Astros mascot Orbit just couldn't seem to distract Big Papi during Saturday's matchup between Boston and Houston.

Don't worry, it was all in good fun. The two are actually close friends:

Who wore the sunglasses better, me or @davidortiz? Don't forget sunglasses giveaway night here on 7/26! #Astros pic.twitter.com/kPgOMtlt16

- Houston Astros Orbit (@OrbitAstros) July 12, 2014

But if he really wanted to distract Ortiz, maybe he should have brought his dancin' security guard along: