it is possible because like sandals, flip flops has a attachment at the toe and also like sandals they fit loosely on your foot and they sometimes slip a little in the back when you walk.
Because they are open toed shoes
sandals are a sole with straps... is that not what flip flops are??
Flip flops can be sandals but not all of them are, however it depends on who is doing the defining
Because they are loose fitting and open
I think its coz u dont tie anything and just slip in,i know slip in shoes are there but theyre new