@Michael Loucks
I suppose that's true even for 'take a leak' or 'take a dump' (don't you actualy leave one?).
I had to google that to find out why take is used that way. This is what I found:
Why take? Basically, "take" in this usage emphasizes the "following noun." When verbs do this, they are called delexical or empty because the verb is less important than the following noun. To take a piss => to piss. To take a leak => to leak. It's not that anything is being literally taken, as with other meanings of "to take," but rather that the verb introduces an action. Here is how the OED explains take as a delexical verb that emphasizes carrying out the following action:
81.a. To make, do, perform (an act, action, movement, etc.); to carry out. Often take forms with the object a phrase which is a periphrastic equivalent of the cognate verb: e.g. "to take a leap" is equivalent to "to leap," "to take a look" to "to look," "to take one's departure" to "to depart," etc.