no that won't work phonetically. It's like changing our keyboards to ABC format.
simple - be blunt and concise then.
"Do I look fat?" -Yes
"Do I look fat?" -"No not really but it's just a couple extra pounds."
How you say it in English is entirely up to you as there are many different ways to say it. You can simply and easily keep it concise and terse. (notice what I just did there? 
)
