Taunt : 100
On the rivet levels (where you make Donkey Kong fall), position yourself very close to DK. Each time you jump in the air you'll get 100 points. This is sort of pointless (no pun intended) because as you're taunting DK, the bonus time counter keeps on dropping.

Fake-out fireballs
On the rivet levels, if you find yourself trapped in by fireballs at the edge of the screen, jump off the edge of the level. Mario will "bounce back" after a short delay, during which the fireball may have moved elsewhere.

Stupid barrels (Japanese version only)
In the barrel levels, barrels will never roll down the ladder you're climbing on as long as Mario's hand is touching a red girder. However, the barrels that DK throws straight down can still hit you.