Slowly you turn, and there it is. Do not run--that will provoke the ramming response. It is deceptively fast. You cannot outrun it. A permanent, embarrassing honeycomb imprint will forever remind you of your mistake.
Make yourself large. Swing a stick. Shout threats in a deep, throaty voice. Hurl profanity. Throw rocks. Better yet, throw bags of kitty litter. One or two direct hits will confuse it, give you the chance to slowly back away.
And then run like hell, uphill if possible.