Said to be from its comical appearance.
giggle suit (plural giggle suits)
- (Australia, military, slang) Army fatigues.
1976, Ken Clift, The Soldier who Never Grew Up, page 37:In this instance, Marty's giggle suit was many sizes too large for him so complete with slouch hat and great red-brown, steel-tipped Army boots, off he went […]
