You may not have noticed it, but the boys usually have their own way to take off their shirts when they undress, just as the girls have theirs.
Men tend to undress by pulling the t-shirt from behind their head, grabbing it between their shoulder blades, while women usually take the t-shirt at the front, at the bottom, crossing their arms.
What is the reason for this diversity?
Perhaps we should do in-depth anthropological studies, or we could come to some assumptions: the difference could be due to the fact that women usually have thicker hair than men, so their hair could be an obstacle in pulling out the t-shirt from behind. Another explanation might be that men's t-shirts are more tight than women's ones, which would give them more room to manoeuvre when they parade their clothing.
But the hypothesis that satisfies us the most has sexual and sensual connotations. When man takes off his t-shirt from behind, he tends to show off his muscles in his arms and back. The woman, removing her t-shirt at the front, would tend to expose her breast with that gesture.
So, in our humble opinion, even the different ways of undressing have to do with one of the various seduction techniques inherent in us.