--------- quick·ie : something done or made in a hurry: as a (1) : a hurriedly and cheaply produced motion picture or play (2) : a book or other publication hurriedly written and published b: a hurriedly planned and executed program (as of studies) c: a hurried trip or other activity d: a sudden often unauthor
Actually, I already looked it up in a dictionary and got about the same definitions. However, it may not fit the context which I provided, which is why I asked ...for naturalness.
I think any native speaker (at least in America) is going to interpret quickie as a brief sexual act. Only if there's a clear progression of context can it be used and understood without the sexual connotation.
For instance, somebody might refer to something as having been a quickie (break, nap, task, etc) but even still there's the underlying reference to the sexual definition.
'quickie' is also used to describe a non-sexual 'quick thing'. ...but it needs to be clear what that thing is from the context. If you just use 'quickie' on it's own then no-one will have a clue what you are talking about. It's more of a description than a noun. A slang word really...
Are you going to be working late again tonight? I hear you've got to finish the McPherson report...