You hear a distant squeak.
A board squeaks loudly under your feet.
You hear a distant explosion.
KABLAMM!!  You triggered a land mine!
You are caught in a bear trap!
You fall down the stairs.
You are frozen by the floating eye's gaze!
You are splashed by acid!
You feel guilty.
You have a sad feeling for a moment, then it passes.
Your brain is on fire!
You choke on your food.
You hear the footsteps of a guard on patrol.
You hear the chime of a cash register.
The air crackles around the gnomish wizard.
You rebalance your load.  Movement is difficult.
You hear a monster behind the boulder. 
KLUNK!  The pipes vibrate noisily.
You summoned a water demon!
Oh, wow, great stuff!  Everything looks so cosmic now!
You stagger...
You hear an elephant stepping on a peanut.
Whew!  You survived that attempt on your life.
This tepid water is tasteless.
You faint from lack of food.
There was a rattlesnake hiding under the statue of a mountain centaur!
Wait, that's a large mimic!
The leprechaun hits!  Your purse feels lighter.
