I think a teaser usually refers to the preview trailer itself, not the person who makes the video. Love the quiz, though. Maybe there’s a good aitch word out there. Or something like a two word option like you did with w! Something like “ate chicken”? Anyway, creative quiz!
I see what happened: "Someone that makes fun" is one part of the clue, and the rest of it is separate. I didn't mean it to be confused as "someone who makes a video" – so sorry about that! But glad you liked it anyway!
At least in my accent, I pronounce them either "SEE-kuhnt" and "CO-see-kuhnt" or "SEE-cant" and "CO-see-cant". I believe that's /ˈsiːkənt/ and /ˈsiːkənt/ or /ˈsiːkeənt/ and /ˈkəʊsiːkeənt/ (pardon my rough transcription skills). How do you pronounce them?
The "secant" clue has an absurd pronounciation in the USA it seems! How do you pronounce "sec" or "cosec" ???