Dooms?

Ava asked me today what "those are".  I thought briefly about what to tell her since she is pretty smart and very well-spoken.  I told her "boobs"...stupid me!  I should have just told her the technical word but I didn't in a moment of minor panic.  She smiles and giggles and says, "I don't have dooms."  I repeated it again.  She again says, "I don't have dooms."  Then here I am, much to my chagrin, slowly and phonetically sounding it out..."Watch my lips Ava...boobs".  She still didn't get it so I take it to her dad.  I tell him what she asked and then her follow-up.  He asks her if she has dooms.  She said, "No.  I have BOOMS!"  And says it very slowly again to him.  What a mess!