Related:

• Never sit on a tack. -- Useless advice #986
• You're so tight-assed, you can sit on a tack.
• He who sitteth on an upturned tack shall surely rise.
• Zekle crep' up quite unbeknown An' peeked in thru' the winder, An' there sot Huldy all alone, 'Ith no one nigh to hender.
  -- James Russell Lowell (1819-1891) -- The Biglow Papers, Second Series, The Courtin'...
• Sit, Ubu, sit! Good dog. *woof*
• The implacable, slackable flack, Sets sail on a backable tack, Close-hauled, his spinnaker Gives him his ginnaker To avoid and evade an attack.
  -- Walt Kelly...
• Abdominos... sit-ups & pizza.
• SAS: Sit And Spi
• Witches are welcome to sit for a spell.