in short pants
English
Etymology
From an early 20th century practice of reserving short pants only for small children.
Prepositional phrase
- (Canada, US, idiomatic) Synonym of in short trousers (“quite young”).
- Near-synonym: in diapers
- Look, honey, this ain't my first rodeo, OK? I was doing this when you were in short pants.
- 1948, Albert Craig Baird, Lester Thonssen, Waldo Warder Braden, Owen Peterson, Representative American Speeches:
- Dr. Smith said a moment ago that we are scientifically adult but spiritually in short pants.