It just doesn't work as the other person can't help but smirk and smile and eventually we're all laughing.
When I get agitated or excited or tired my accent slips through, unnoticed by my usual filters that have been built up over many years, in an effort to speak "correctly". But the slip-up can be useful humor relief when it's needed the most - in times of stress.
Remember to laugh when you get over stressed. It's better for your body, for your challenges, for your healing.