“Her: Let’s meet for a drink and see where it goes!” (joke)

A dating joke was posted on Twitter by He Called Me Greenhorn on January 25, 2021:
     
Her: Let’s meet for a drink and see where it goes!
Me: It goes in your mouth, Jennifer.
   
“See where it goes” usually means, in this context, “Let’s see where the date goes”—not where the drink goes.
 
 
Twitter
He Called Me Greenhorn
@WhatsAGreenhorn
Her: Let’s meet for a drink and see where it goes!
Me: It goes in your mouth, Jennifer.
8:05 PM · Jan 25, 2021·Twitter for Android
 
Twitter
Kiley Lovato Karsleepian
@khuBaibStation
Her: let’s meet for a drink and see where it goes!
Me: it goes in your mouth, louise
4:25 PM · Mar 8, 2021·Twitter Web App
   
Reddit—Dadjokes
Posted by u/vietlinh12hoa May 5, 2022
Let’s meet for the drink and see where it goes
The drink goes to our mouth, I believe
 
Reddit—Jokes
Posted by u/porichoygupto June 30, 2022
[First Date] Her: Let’s go get a drink and see where it goes.
Him: I’m almost sure it goes in your mouth.