Please put an old man out of his misery. Thanks to the answer in here for 14 and the line through the shapes to give me the frankly hilarious 17, I have this all but done except 10 and 6 (solved 21 as I wrote this! Realised I had the first syllable of 20 wrong)
10 Tortoise almost catches hare at the end, I recollected. I have no idea on this at all, despite having -i-cat-e
6 Troublesome parts of communication app switched p-s-y