awesome, count me in, let's go
put a strong accent on "there"
Similar to I'm friends with that
except more emphatic and action oriented.
What McDonald's was striving for and disasterously missed with their I'm lovin it
slogan, an anagram that can be rearranged to form 'ailing vomit'
You've got extra tickets and backstage passes for the U2 concert? I'm THERE dude.