Big What???

I'm upstairs cooking dinner - Hope is coming upstairs calling "hey Mom!" - I turn and see her holding her finger and she looks at me and says "I've got this big ass.... " to be true, I stood there looking at her waiting for her to finish the sentence, like - cut or scrape or booboo... ( not that she would of heard a sentence in that context in our house ) - but nope, she's looking at me expectantly. So I ask her "what was that?" . Hope repeats a bit more clear
" I've got this big eyelash ".... oh, eyelash... it's kinda sad these days are numbered!