An awful outdated system still used in many countries such as the US and partly in the UK.

Revolves around measuring weight, length, distance and currency in units that actually do not make sense, unlike the metric system which has been taken on board by most countries and is used in all science.

An awfully effective, real-world-based system of weights and measures still used in some countries such as the US and partly in the UK - despite the almost dictatorial pronuniciamentoes of the EU 'Yurp'} that everything must be measured in some - mis-measured - micro-fraction of the Earth's semi-demi-circumference.
Revolves around measuring weight, length, distance and energy etc. in units that actually do make sense - inch - called 'un pouce' in French is the length of the first digit of your thumb; span is the span of a man's hand fingers outstretched; a foot - 'un pied' in French - is - well . . . - the length of a foot; a yard

The Imperial System is a system of measurement developed by pimps, for pimps and is thus used in America and a few other pimpin places as opposed to the Metric System would sounds kinda gay.