Horses have weenies

Tonight before her bedtime Nadia and I were searching the house for Purple Blankie.  When we finally found it in my bedroom she put it between her legs and started to gallop out of the room with most of Purple Blankie dragging behind her.  On her way out the door she looked back and said "I gotta horse weenie!" and galloped on to her bedroom.  ummm, WHAT?!?  Two thoughts immediately came to mind; first, was she referring in any way to the size of the long blanket trailing behind her and if so, what horses has she been looking at? Second, I flash back to the night before last when Brad was getting up from the couch and accidentally caught his foot right between Luka's legs.  He said to Luka, "Ooops! Sorry dude, I didn't mean to kick you in the weenie."  Nadia thought this was hilarious and worth repeating at least three times. Brad and I smiled at each other but said nothing so we wouldn't draw attention to it.
So tonight when we got back to her bedroom I needed some answers.   "Nadia, does your horse have a weenie?"  "YES, Mommy!"  "Do YOU have a weenie?" "Yessss."  "Where's your weenie at?"  "Right here." (She lifts her leg and points to.................her knee! Yes, her knee!)  "OH, you mean your horse has LITTLE knees!"  "Yes, Mommy.  That means she has wee-knees!" I laughed so hard I think I scared her a little.
Later in the evening I was thinking about the whole thing.....Brad seriously called it a weenie.  That thought cracked me up all over again.