WATCH: Casey McGehee Flips off Giants Teammate

Things were going good for the San Francisco Giants against the Miami Marlins at AT&T Park on Friday night.

So good that third baseman Casey McGehee was in such a grand mood that he could flip off starting pitcher Jake Peavy after nailing a grand slam in the bottom of the second inning.

In what looked like it could have been a tense situation between teammates was actually McGehee responding to what had to be a sarcastic barb from the veteran pitcher.

San Francisco went on to win the game 7-0.

H/t @carmenkiew on Twitter