The most obviously visible thongs can be seen through tight white pants, low hipline jeans (especially when the girl sits down and leans forward), and sun dresses.
Sun dresses in particular are usually really light in color (yellow, pink etc) so you don't even have to look for the thong, the girl will be revealing it through her clothes.
Also you can take the classical route and not be a pervert. Try to become really good friends with a girl and dont let her know that you're after her for sex. Eventually she will become aroused and act sexually as you become more and more intimate. When you're done with her, tell her that "things aren't working out." Find another girl, rinse, and repeat. Well, wearing anything tight will show, if you know what to look for. Panty lines is for one, but if you don't see any she maybe wearing a thong or nothing, I do look at ladies butts.
If they have a thong shape in their trousers then you know if they are wearing a thong. or if their wearing really tight shorts or pants and their butt has no lines on the side then she is wearing a thong
its pretty easy to tell. if you're wearing a thong, there is exta jiggle to your butt. some girls walk differently also.
A GIRL SHOULD WEAR A THONG WHEN SHE IS WEARING TIGHT PANTS OF SPADEX PANTS TO PREVENT PANTIE LINES SHOWING.
nothing but a thong
South Park Mexicans (SPM) (Cheech and Chong) - "Mexican Thong Song"
Go to your room, click on any clothes you are wearing and drag to the closet.
hang out with boys, or wear baggy girl clothes
the same way you'd touch her if she was wearing clothes.
She was either, looking at what clothes you were wearing or shes attracted to you. xD
He wants to make babies with you
if he has a thong in his draw then he is hidding it from you cuz he had sex with another girl
Ask her