A former hoochie mama who has let herself go and grown herself a pooch belly either by having a litter of children or over eating thus earning the title of 'poochie mama'. A large, less than desirable, extra large belly on what once was a fine ass hoochie mama.
One who wears clothes two sizes too small thinking she is still hot. example being... "Look at that POOCHIE MAMA wearin' dat trashy ass shit!"
An individual who appears to or does own a small dog. Specifically a ratty little thing that needs some form of coat in the winter; and by kicking standards, you could easily clear your garden hedge if it pissed you off.
Ryan: Sandy, you are such a poochie twat.
Sandy: what's a poochie twat?
Ryan: means you like like you own a small dog. Dick.
anon: I'm going to kick you in the balls you poochie twat