A mix between spontaneous and fabulous. Usually used to explain a
random, but equally awesome moment in
time. It could be looked at from many angles, and even called fateful that
something so spontabulous could have ever happened.
"Whoa, that concert we went to last night as so cool. It was really
gnarly when we got to
meet the lead singer; that was spontabulous!"
"Yeah, I didn't think they'
d let us."