Mantastic Defined

This is not how we are using the word, but I think that this is probably how we like to think we're using the word, even though we're not. At all.

1. mantastic

Feeling fantastic after the successful completion of a particularly macho feat.

Following his fifth keg of beer, Kevin ripped the horn off of his pet narwhal, and then nailed his porn-star girlfriend for hours. Subsequently, he felt mantastic.