I need a bit of help with this.  I'm going on an airplane this week to another state and it's quite a long flight.  Like, 8-10 hours.  Now, I am going to shave before the flight but of course, since the TSA doesn't allow razors and stuff I won't be able to shave in-flight.  However, when I get off the plane I won't have time to shave before meeting my friends and it will be embarrassing!  Any advice?  My facial hair won't be visible but a hug and kiss will certainly be awkward for me.  Is there anything I can bring on the airplane?  What would you do?

Get an electric razor.

Disposable razors are allowed in carry-on.

http://www.tsa.gov/traveler-information/prohibited-items

I agree, electric razors work best, because when in that cramped little airplane toilet, a little bit of turbulence can cause a nasty cut on your pretty face!