What is the よっか in はじめよっか?


I'm still playing [Game Boy Wars Advance
2](http://www.nintendo.co.jp/n08/bgwj/), and I keep running into colloquial
forms I'm unfamiliar with. Here's one I haven't been able to look up:

> じゃ、さっそく、 **はじめよっか** 。

My guess is that `はじめよっか` is a colloquial form of `はじめようか`. Is that right? If
so, can I generalize and say `okka` is a colloquial form of `ooka`?

Image for context:

![キャット様、修理の必要な戦艦、すべて接岸しました。　　　じゃ、さっそく、はじめよっか。](https://i.stack.imgur.com/ZHuaF.png)




Nice guess :) As noted in the comments, はじめよっか is basically a shortened
version of はじめようか.

Also, more than generalizing about that type of phrasing... I'd almost want to
say it's more of just a way to make a phrase sound more "clipped" (e.g.
something of a glottal stop, or possibly, a contraction...) or maybe even just
an alternative way to put an accent or stress on a part of a phrase... as
opposed to something grammatically formal or defined.

For example, the phrase "getting good" in English is sometimes phrased as
"gettin' good" (in this case, read as "get-tin' good".) The syllable count is
the same for each phrase... but the latter phrase can potentially sound more
clipped (see [glottal stops](http://en.wikipedia.org/wiki/Glottal_stop))
_though this example is not necessarily an exact match to the ようか / よっか
change._

**Usage note:** you may want to be careful with using that style of speech
unless you are older than the person with whom you are speaking. _(Or if you
are somehow related... or are really familiar with the person.)_




Nice guess :) As noted in the comments, はじめよっか is basically a shortened
version of はじめようか.

Also, more than generalizing about that type of phrasing... I'd almost want to
say it's more of just a way to make a phrase sound more "clipped" (e.g.
something of a glottal stop, or possibly, a contraction...) or maybe even just
an alternative way to put an accent or stress on a part of a phrase... as
opposed to something grammatically formal or defined.

For example, the phrase "getting good" in English is sometimes phrased as
"gettin' good" (in this case, read as "get-tin' good".) The syllable count is
the same for each phrase... but the latter phrase can potentially sound more
clipped (see [glottal stops](http://en.wikipedia.org/wiki/Glottal_stop))
_though this example is not necessarily an exact match to the ようか / よっか
change._

**Usage note:** you may want to be careful with using that style of speech
unless you are older than the person with whom you are speaking. _(Or if you
are somehow related... or are really familiar with the person.)_

