Top Definition
1.) When the school year finally ends and you are feelin' groovy.

2.) The feeling of indolence that inevitably sets upon one in the summer months.
Pat: Dude, I'm feeling quite summertastic.
Erik: Word...
by P t M June 09, 2007
1 more definition
5 Words related to Summertastic
The opinion of one that states that the upcoming summer will be amazing.
"This summer is going to be summertastic!"
by rapidfire1205 June 06, 2015

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