As the title states, I'm curious what sound effects edit has truly stumped you before, at least in the sense of having to spend time to create from scratch. Ironically it' seems to me to be most simple of real-life things that can be bane of one's existence.
The kind of sound situation I speak of is one where you roll up upon it while cutting, do a library search and realize you don't have anything relating to or being the actual recording it - there's a deadline looming with no time to record it yourself, no usable PFX of it to build off of, can't rely upon the Foley dept for covering it or fully realizing the sound in which said situation it needs to fully sell it, no time to research buying another library or even the time sampling online options like Sounddogs et al. The kind if situation where it's just you, your library in front of you, a little elbow grease and some magic and luck.
What sound effect edit has had you the most stumped (even if you managed to create it after a bit of effort)?
Recently for me it was the sound of a tree stump (ironically) being kicked - it was a makeshift stump which was essentially a 2 foot tall, 1 foot diameter midsection slice from a tree set on the ground. The actor pulls out an axe stuck in it then kicks it closeup and it tumbles head over heels in the dirt and leaves and rests in the dirt. The entire procedure lasts a mere second - the equivalent amount of time of hearing a bodyfall essentially. Now the leaves and dirt were quite easy to toss in there. But the stump, seriously, had me stumped for some time. It was tough to create that muted high frequency wood hit reminiscent of solid wood (think of the sound when you knock on a tree), but have enough hollowness and thumpiness to carry the weight of wood - but a dense "thocky" hollow, not like the thin hollow sound of a door being kicked, and not small or chunky like small wood pieces being dropped. Such a particularly-targeted frequency content. Needless to say the final sound was arrived at after a little elbow grease so it was a happy ending, but boy was it tricky to pull that one out of the bag - even to find the right source elements.
I'd love to hear what's had you stumped the most, regardless of how ornate or or simply literal of a situation it was.