The physical sensation didn’t exactly turn you on, but your breasts reached new, prepossessing heights, right along with your actual relationship. Takes Two to Tangle You’d be making out, and your partner would take the leap and attempt to unhook your bra from the back.
The three bases and the place where the batter is standing while hitting the ball (home plate) make for a rhomboid (see the picture), and the claiming is done by touching the bases which are represented by white squares.
So from the home plate, the batter needs to claim the first base first by touching it, then the second, then the third before the opponents do the same by getting the ball there.
Finally, they gave up and pretended like getting lost in your bra clasps was all part of the plan. Unwavering Support This was when the tit-toucher in question would simply place their hand on your breast and just ...
hold it there, probably because they were just so terrified/amazed/overwhelmed with emotion.
Talking about fifth base when there's really only four bases reminds me of the expression Up To Eleven.