Scanty cheeks mak a lang nose.
Scart-the-cog wad sup mair.
To "scart the cog" is to scrape the inside of the dish.
Scorn comes wi' skaith.
Scornfu' dogs eat dirty puddin's.
"'Hout, fye—hout, fye—all nonsense and pride,' said the Laird of Summertrees, 'scornful dogs will eat dirty puddings, cousin Crosbie. Ye little ken what some of your friends were obliged to do yon time for a sowp of brose or a bit of bannock.'"—Redgauntlet.
Scorn not the bush ye get beild frae.
Scotsmen aye reckon frae an ill hour.
Scotsmen aye tak their mark frae a mischief.