Bahahahahaha!
I love that you got cocky and then stepped in it like that. My tutor makes sure to point it out when I switch out words...which she needs to do, of course, but we get a lot of giggles out of it. "Suis-je sale?" ("Am I dirty?" I had mixed up lever and laver, and mistakenly told her to wash herself, not to stand up.)
At least french is becoming less "slippery" to my brain. It took my husband a WEEK (yes, a week, though it was a vacation week, so I drank away a lot of brain cells in that time) to teach me my first french phrase, "Je ne comprends pas." As soon as the words left my mouth, I forgot them. "Joo no clomprey pah? What was it again?" This morning, I was looking for the stapler, and I was muttering to myself..."Où est mon...mon..." (haven't used that word since learning it in the first part of my first french course, probably back in October) "...mon...AGRAFEUSE!!!!!!!!!!!" Screaming out "STAPLER" in french got me a weird look from the husband, too.