Mandatory when centauress' are mentioned in a GB thread. Monster girl GB is the best. Not only a gender change but an entire makeover on top.

>Centaur
>Have to learn to walk on four legs
>Can't even reach your new pussy to experiment
>Hell can't even cover it up, got the new goods on full display with every swish of your tail
>Humans generally are recipient to you but it's a struggle as none of their architecture is built for you in mind

>Harpy
>Don't even have hands anymore. Better have a friend to spoon feed you or suck it up and dig your face in. Enjoy the mess
>Can't put on clothes alone. If you were TGed alone you're probably just butt naked with your new tits and pussy on full display out in the wild. Enjoy never being able to approach a village much less a city, where you're shooed off as not even a menace but a nuisance and pest
>Best bet is probably to find some farmboy to romance and fuck in hopes he takes you in. Still big chances your chased off by his parents, with a pitchfork at best, sword at worst

>Lizardwoman
>Feel intelligence slipping
>Start skulking caves
>Eventually instinct takes over and you find a strong mate who fucks the sentience out of you
>No more annoying thinking, just eating, fucking, and laying eggs
>Eventually become a thick broodmother who fills the mountain caves with your offspring only to catch the attention of adventurers and have your head mounted at the nearby middle-of-nowhere inn

>Lamia
>Movement flipped on its head. Paths that were easy are now hard and vice-versa
>Most civilizations reject you
>End up in a nomadic performance group as barely more than an attraction
>Learn to dance and sway in extremely revealing clothing that barely contain your bulging breasts, tummy and navel on full display
>Somewhat embarrassing but protected by the caravan and eventually come to be accepted and settle down with one of the men or women there