What Does T-Shirt Your Mom Is A Horcrux Mean?
In Harry Potter and the Half-Blood Prince, by J.K. Rowling, a witch or wizard may use Dark Magic to divide their soul and hide it in other objects. The object then becomes a horcrux (plural: horcruxes). This must be done after an act of supreme evil e.g. murder. This grants them a form of immortality.
Voldemort can stay alive because he has seven horcruxes, including his body. He is the first person to have more than two.
Your Mom Is A Horcrux is a sarcasm expression, a joke for harry potter fans (potter head) that your mom is a part of you in a bad way. You can stay alive because of your mom, but if your mom gone, you are nothing. You possibly dead and become no body.
You can give Your Mom Is A Horcrux T-Shirt to your friends who are always dependent on their mother, not independent, weak, always depending on their mom and cannot make their own decisions.
Also check another horcrux t-shirt like Make Love Not Horcruxes T-Shirt which means don’t do bad things like making horcrux but do beautiful things like make love.