Citations:pants-shittingly

Adverb: "(slang, vulgar) in a manner, or to a degree, capable of causing one to soil oneself in fear; terrifyingly"

 * 2007 — Scott Moore, "Russians Are Crazy!", The Portland Mercury, 7 June 2007:
 * The documentary doesn't break any new stylistic ground, but with a subject as pants-shittingly terrifying as massive, nationwide credit card debt, the filmmakers didn't need to get clever.
 * 2009 — David Wong, John Dies at the End, Thomas Dunne Books (2009), ISBN 9780312555139, page 41:
 * I convinced myself with every passing peaceful moment that things were getting better, that the worst was over. In that, I was pants-shittingly wrong.
 * 2011 — David Sirota, Back to Our Future: How the 1980s Explains the World We Live in Now -- Our Culture, Our Politics, Our Everything, Ballantine Books (2011), ISBN 9780345518781, page 86:
 * These guys literally tear into the house lurching toward the children with their arms maniacally in front of them — a pants-shittingly scary Night of the Living Dead reprisal that was not only hysterically antigovernment in its portrayal, but really not appropriate for any kind of movie marketed to children.
 * 2011 — Adrian Mack, "Locals the Simpson Brothers wing it big time on Cover Me Canada", The Georgia Straight, 21 September 2011:
 * How's this for pants-shittingly terrifying? You’ve got yourself a little band, you’ve played precisely once in front of a tiny, invited audience at the Cellar, and then— boom! You’re making your actual live debut in front of roughly one billion people on national television.
 * 2012 — Danny Vittore, Back the F*ck Up!: Wild Animals That Don't Give a Sh*t!, Krause Publications (2012), ISBN 9781440229251, page 85:
 * As a person who is absolutely terrified of snakes, I think I am perfectly positioned to comment on how terrifying king cobras are. The answer is pants-shittingly.