Parodied: The clock is ticking, sweat beads on Bob's brow as he mentally counts down the seconds, and he dashes into the kitchen just in time to take his pie out of the oven.
Zig Zagged: Bob arrives with minutes to spare to rescue Alice... but it turns out the controls are in a completely different room. He gets to that room with moments to spare, but it turns out the key to the controls was left on the desk in Alice's room... and the whole trap turns out to be a dud, anyway.
The Death Trap activates instantly, there's no timer in the first place.
Lance never leaves Bob's side, and is there to help with the battle the entire time.
Lampshaded: "You couldn't have gotten here any sooner?"
Bob doesn't rush to the trap because he doesn't want to make his dramatic entrance early.
Lance wants glory, so he waits until Bob loses to jump in and save the day at the last moment.
Emperor Evulz knows Bob will disarm the trap at the last moment, so he rigs the timer display to be 10 seconds slow.
Bob knows Lance will rush in at the last moment to save him, so he goes all out against Emperor Evulz in order to leave him weakened for Lance to finish off.
Bob cuts Alice out of the trap rather than trying to disarm it at the last moment.
Emperor Evulz locks down his throne room so that no one can interrupt the duel with Bob
Discussed: "This isn't an action movie, Alice! Your friend Bob isn't heroically going to appear from nowhere to save you the instant before you're killed!"
Conversed: "Thank goodness for Bob's Rangers. I wonder how they always manage to arrive right when there's going to be trouble, no matter where it is."