@sun Don't remember if I've told this story on here or not, but in high school I told this guy I had a crush on that I could calculate water line (I cannot now, and I definitely couldn't then) so I could sound smart, and then he actually pulled me into this project for making small 1-2 passenger-size boats float for his pre-engineering class.
I just made something up about where it was based on some equation I scribbled down that was complete gibberish, and got lucky when it turned out to be pretty close to right; I don't think they ever figured it out.
Moral of the story: roll your bluff, you got this. :izumithumbsup: