Bondage Blocks in the Blocks Bodega

[Polyedit2000]

After a bit of time, the girls eventually realized that all these ?-blocks have the same golden traps in them.  In fact, the design of the puzzle became clear to them: the blocks would trigger some sort of timed condition and release the trap on the victim that bops the block underneath.  The blocks probably needed some outside-the-box thinking to trigger them safely.

Thankfully, hitting the blocks reset the timer for whatever the timer does.