Any violation of continuity, personality, or even physics is permissible if the result gets enough of a laugh.
This is the comedy equivalent of the Rule of Cool. Basically, what this means is that if you, the player, try something absurd yet entertaining and it gets a laugh out of the group, you've earned yourself an experience point bonus, and will likely succeed at whatever you are trying.
Please keep in mind, though, that there is a very, very thin line between “funny” and “Idiotic”.
Funny is good and gets rewarded.
Idiotic is bad and gets punished.