The remaining 19 were asked to submerge their non-dominant hand into a bucket of warm water for 90 seconds, while moving paper clips one at a time between two boxes, to keep up the illusion of the task being related to physical capabilities.

ECONOMIST: Religion got it right: pain seems to assuage guilt

The 23 who had written about everyday interactions and 20 of the 39 who had written about behaving unethically were asked to submerge their non-dominant hand (ie, left, if they were right-handed, and vice versa) into a bucket of ice for as long as they could.

ECONOMIST: Religion got it right: pain seems to assuage guilt

And the rising tide of anti-war sentiment threatens to submerge a slew of Republican senators in Democratic-leaning states, such as Susan Collins (Maine), John Sununu (New Hampshire), Norm Coleman (Minnesota) and Gordon Smith (Oregon).

ECONOMIST: The Democrats' hopes are not confined to the White House

In southern states you'll find "noodlers"--men and women who submerge themselves in rivers and stick their arms into holes they believe (hope?) are occupied by golden-retriever-size catfish.

FORBES: Magazine Article

If loose lips sink ships, a too-revealing mystery shopper could certainly submerge an hotelier or two.

CNN: Confessions of a hotel mystery shopper

Out in the middle of the water, he would submerge his imposing frame until only his Gill-Man eyes and nostrils showed above the surface.

ECONOMIST: The Creature from the Black Lagoon

Participants on a 10-to-12 mile Tough Mudder course wade through waist-deep mud, crawl under barbed wire, submerge themselves in ice water and jump through fire.

WSJ: Office Workers Run Extreme Obstacle Courses