The sign for foster as in "foster parents" is done by using the sign
I know that seems "harsh" but that is just the way the
sign is done by most of us Deaf folks.
It isn't meant to be an insult or anything.
To do the sign for "false," move your "Index finger"
past your nose. Your index finger doesn't touch the nose, it just
Your index finger doesn't touch the nose, it just comes close. The movement
can be in the wrist or it can be more in the elbow as I show here. The
movement is NOT in the knuckle.