This word can be used in several ways.
1.) To desribe how much you enjoy spam ham.
2.) An
sarcastic way of saying your pissed about your
junk mail.
3.) Just another
way to say "Cool" or "Awesome".
1.)
Wow mom, this
Macoroni and Chesee with spam is spamtastic!
2.) Matt opens his e-mail to find 4,294 new
messages in his inbox. Sarcasticly he utters "Spamtastic".
3.) Kyle: I just found $100 under my bed!
Matt: Spamtastic!