I'm trying to think of examples where rather than dialog / one-liners, the gameplay itself is amusing.
Just Cause 2 - the weird physics resulting in amusing occurrences, like a car spinning around in the air 10-12 times after a tire pops.
Mount and Blade - In sword combat, clotheslining an opposing rider with your sword as you ride past
Call of Duty - Killing an opponent with an undetonated grenade
Just Cause 2 - the weird physics resulting in amusing occurrences, like a car spinning around in the air 10-12 times after a tire pops.
Mount and Blade - In sword combat, clotheslining an opposing rider with your sword as you ride past
Call of Duty - Killing an opponent with an undetonated grenade