What is always in front of you but can't be seen?

Eighty-year-old Bessie bursts into the recreation room of the retirement home.
She holds her clenched fist in the air and announces, “Anyone who can guess what’s in my hand, can take me out to dinner tonight!”
A witty, elderly gentleman in the rear shouts out, “An elephant?”
Bessie thinks a minute and replies, “Close enough!”