A person who is extremely uptight, naive or innocent.
Say anything slightly vulgar and Jane gets all red in the face and walks out - she must be virginal.
According to Myspace, this is a mood that you can be in.
Meaning to, you guessed it, feel like a virgin.
Fresh, innocent, untouched. You get the idea.
"Hey Jake, how are you feeling today?"
"Oh, virginal I guess."
Kristi: I'm feeling virginal today.
Me: I doubt that very much.