Well, I considered making this a thread where you post the riddle without the answer, but I am mostly interested in getting riddles to try on others. Anyway, if you want to not post the answer or write it backwards to avoid spoilers, go 'head.
Mine is from the 11th hour:
“This eight letter word has “kst” in the middle, in the beginning, and at the end.”
The answer is(backwards typed) dnatstskni.
I’ve used this in schools and only one student has solved it.
What about you?