if i get them any bigger 4get they will be to baggy on the bum these are not exactly tight fitting as it is, maybe its just the cut dont usually have this prob with trousers, thanks for the tip beejay will try the peacocks ones.
will try a thong, not that i own one but will purchase one and try, just thought a thong as they sit up inside the bum cheeks would encourage the trousers to do it even more, but still worth a try