Fallon: The most exciting thing Sybil has done was wear pants once.
The French government has finally revoked a 200-year-old law that made it illegal for Parisian women to wear pants.
trousers, 1840, see pantaloons. Colloquial singular pant is attested from 1893. To wear the pants "be the dominant member of a household" is first attested 1931. To do something by the seat of (one's) pants "by human instinct" is from 1942, originally of pilots, perhaps with some notion of being able to sense the condition and situation of the plane by engine vibrations, etc. To be caught with (one's) pants down "discovered in an embarrassing condition" is from 1932.
ants, cream one's jeans, fancy pants, fly by the seat of one's pants, fudge one's pants, get the lead out, have lead in one's pants, high waters, hot pants, raggedy-ass, seat-of-the-pants, shit one's pants, smarty-pants