Of short tops and the constant tugging

Have you seen girls wearing a t-shirt type top (which may go under several names such as tank, halter, noodle, whatever)? Now every single girl I've seen (and not that I ogle) has this really really irritating tic of almost unconsciously tugging the top from the lower back, where it eventually ends up, to the waist. I asked a female friend about this and she said that it is generally to maintain modesty. So the thing is this. If they *think* the bare midriff/lower back may be immodest, why wear it and if they do not, then why tug. This my dear reader is another example of the degenerate hypocritical culture we have (and I do not mean the Indian culture but the global culture). Fucking humans. Useless pieces of carbon shit.