ありっちゃあり meaning? I've seen several sources explain the colloquialism in different ways. One says the is a slang way of saying , as in . Another says it's a slang way of saying as in (which I frankly find more likely). Since both full sentences point to rather different sentiments (the affirming attitude of 'it more than exists' vs the unwilling 'well it is there') I thought I'd ask if there was anyone familiar with it. Is it one of the two sentences, or am I misunderstanding the sentiment of one sentence, or is it a shortening of something else entirely?

is indeed a contraction of and it's a way of saying "yeah, sure, why not...".

As you say, it's completely parallel to , just with (which means something like "something is possible/doable/acceptable/...").