Hi Bingley! Thought I just stop by and touch base with you.

For non baseball fans, runners must touch the base as they go round the circuit or they are out.
You can "touch base" with someone, thereby keeping in touch in a casual way.

You can also say "I touched all the bases" meaning you crossed all the "t"s and dotted all the "i"s or thoroughly completed a job.

And if you are going to a required gathering and plan to spend just a few moments then you can "touch base" and leave.
Anyone want to take on "Batter up!" & "Your outta' here!"& "in the bullpen" now that you're warmed up?
wow
The Boston RED SOX rule