DM: The door doesn't open.
Barbarian: I back up against the opposite wall, and ram into the door with a shoulder tackle.
DM: Strength roll, please.
Barbarian: *rolls a 3*
DM: The door remains closed, and you hurt your shoulder a little...
Barbarian: Well ****
Bard: I PULL the door open.
DM: It opens....
Barbarian: WTF
DM: Actually, it was supposed to be magically locked, but that was just too good to pass up...