I often wonder…
I saw a cake in a bakery and thought “Definitely got some over-extrusion going on there…”
If I mowed like a slicer It would likely take me twice as long and my estimate for completion before I could enjoy my post mow beer would be 30% innacurate.
@Eclsnowman The obvious solution is to print a beer can holder for your lawnmower.
@Mike_Miller you sir are brilliant. But depending on mow time and beers consumed I may see layer shifting towards the end of the job. 
Slic3r would ask you to kick-start the mower and accelerate to 3m/s in the same instant. You are expected to turn around corners in no time.
Perimeter first, empty the bag, start in the middle and go almost to one corner, empty the bag, back to the middle for a few lines, empty the bag, go from the far corner back to the middle, then finish the two lines left in the first corner.
I think about this all the time!
As I’ve spent more time in OpenSCAD than slicing recently I’ve actually found myself getting stuck at looking at every day objects and analyzing what union/difference/etc operations they could be made up of.
“Honey, isn’t this flower pot nice?” … hmm… difference() { … cylinder… union cylinder and cylinder… }
Aside from snarky comments about Slic3r, I always mow like I slice- three perimeters followed by rectilinear infill at 45°
@Mark_Zimmerman of course I alternate polarity of infill bias. Sometimes I add an angular offset of pi/4 to keep the orientation of the grass from getting too deeply set. I like the look of the biased grid, but I want to keep my grass vibrant and robust.
Are you using an integer approximation of Pi, or are you using the REAL irrational number in your calculations?
@Mike_Miller most of the things I do are irrational…