A friend of mine from college
once bought a packet of "Smith's Square Crisps" (do they still make them?). He noticed that they weren't particularly square at all and did a survey of them and found that less than 10% had 3 corners that were close to a right-angle to within an acceptable tolerance.

So he composed a letter detailing this with added geometrical diagrams and information of what makes constitutes a square along with more diagrams.

If you're going to complain in a petulant manner, then at least put some effort into it.

Edit: I'm fairly sure he kept a copy of it so I've emailed him to see if he can dig it out, scan it in and post it.
( sandettie light vessel automatic New Twitter - @bollocksreally, Tue 7 Sep 2010, 8:29, 4 replies)

to within an acceptible tolerance.
very good
( Ring Of Fire A petty, drooling belming butthurt retard., Tue 7 Sep 2010, 9:38, closed)

i believe
+/- 10 degrees or so, which is more than fair I think
( sandettie light vessel automatic New Twitter - @bollocksreally, Tue 7 Sep 2010, 10:11, closed)

Even better
if it's an acceptable tolerance.
( K2k6 has a proper job these days, Tue 7 Sep 2010, 11:06, closed)

oops, spelling fail
*ninja edits
( sandettie light vessel automatic New Twitter - @bollocksreally, Tue 7 Sep 2010, 11:56, closed)

They do indeed still make them
And their ready salted flavour are king of crisps. I have, in fact, just eaten a packet.

No idea how the shape makes them tastier than other crisps, but it does
( LemonEntryMyDearWatson This time, Moriarty, the hand is on the other foot, Tue 7 Sep 2010, 13:13, closed)

Geometry, that's how.
Courtesy of Science™
( sm.pl.crt.rs I don't fucking know, do I?, Tue 7 Sep 2010, 15:21, closed)