One Smart Private

As a platoon of trainees stood in formation at an Army Base, the Drill Sergeant walked up and said, “All right! All you retards fall out.”
As the rest of the platoon wandered away, one soldier remained at attention.
The Drill Sergeant walked over until he was eye-to-eye with him, and then raised a single eyebrow.
The soldier smiled and said, “Sure was a lot of ’em, huh, Drill Sergeant?”