Three Sisters (play) Puns

We were celebrating my other niece's 2nd birthday, when my 5-year-old niece comes up to me and says, "Hey Uncle, wanna play a game?"

"Sure. What game?"

"You pick a letter and I say three words that start with that letter."

Since it was her sister's birthday, I picked "B", assuming that she’ll probably say "Birthday".

She was like, "Okay… B... B... BB..."

I sat there for a second in a moment of defeat...

"Yes. Those are all words."

You little shit.

Edit for the Dad-impaired: "Be... Bee... BB..."

2nd Edit: Awesome! Each of my nieces got me to the top of this sub! Here's the one about the 2-year-old.