I am teaching my 7 year old daughter to speak English, and we came across the word "penultimate" meaning next-to-last. After describing to her the meaning, she tried to use it in a sentence less than an hour later: she asked me to pick her up, and I said "last time" to which she replied "penultimate time" in English.
Only now do I realize that is the reason that she kept asking me to pick her up!
To me this doesn't sound right. Is it proper to request "Pick me up for the penultimate time"?