Any question answered...

urban myth that the more cylinders you have = greater penis length.
somebody misheard "you are a big cock" and mistook it for "you have a big cock"
a whole industry of chrome phat pipes and window tint kits is based around this fallacy.

The greater the amount of Halfords tat (vinyl window tints, "chrome" exhaust tip etc) the smaller the engine is likely to be.

How often is it a 1.1 litre Corsa that looks like it has been covered in glue and rolled through Halfords, versus it being an Audi RS4?