To flirt with someone subtly by rubbing your feet against theirs. This is done usually in secret with other people present, popularly occouring at dinner tables, in church, and if you're nasty, a bathroom stall.
An alternate description of holding hands which reinforces its intimate aspects. Used by individuals who are feeling smothered by their significant others.
Whenever Cyriac played finger footsie with Priya, she felt like an animal in steel trap that must gnaw its appendage off to escape.