I have also caught myself in using "janky", but that is such a great word! Not used anything else, naturally, as I speak Norwegian usually. If I suddenly slipped in a "ostensibly" into my normal vocabulary, people would probably think I'm crazy.
So, wait, have you ever caught yourself spittin' straight Norwegian and suddenly a 'janky' slips out? 'Cause I imagine that would be a little jarring.