Players within the diamond, such as the shortstop, will also be doing this as well - they often receive the ball from the infield.
As such, the infield is still "out there", away from the "usual" sexual interactions in the diamond, but they are things you might pass upon the way.
It is, however, most likely a reference to racing in motor sport as the red flag is displayed when conditions are too dangerous to continue the session.
This makes sense when looking at the "translation" here below.
If you are together with a basketball player, kisses her, and then tells her that you are now at second base, she might become very confused.
Also there is the joke that basketball players never get laid because they always jump before they score.
Not really a big deal but it just annoys me.1.75 , 4 September 2014 (UTC) The explanation says that the meaning behind the base 2 label is unknown.The second part, the diagram, depicts a much more complex version of the baseball metaphor, where baseball terms and jargon are used to describe the many and varied things human beings like to do in the bedroom. In order to understand the terms used, one may want to consult this picture: The "diamond" is the geometric pattern formed by the four bases - first, second, third, and home plate.After the ball is hit by the batter, and is in the air, players have a chance to move to the next base in line, from first, to second, to third, and finally to home plate (scoring only if they make it to home plate), only being removed from play if they are touched by a player carrying the ball in an attempt to move between bases.Here is a translation of Ponytails comment: This would mean that Ponytail was about to go down on another girl, while this girl had her period.Many people would find it disgusting to go down on a girl while she was menstruating, explaining Ponytails reaction to Cueball's Sounds tricky reply.