I guess that's correct

The other night Elise and I were sitting at the table finishing dinner. Anni had left the room to feed Colin.
This was the conversation that broke our silence and led to more of it:

Elise: "Where's mom?"
Me: "She's feeding Colin?"
Elise: "On her boob?"
Me, after long pause to consider whether this was the time to correct, applaud, explain or otherwise deal with the use of slang: "Uh, yeah, I guess."