From: http://www.bbc.co.uk/worldservice/learningenglish/language/2013/10/131003_todays_phrase_get_a_load_of_this.shtml

Get a load of this!

A row of milk churns loaded onto a lorry for transportation
A lorry full of milk churns, ready for transportation.

Today's Phrase

You say get a load of this when you want someone to pay attention to something exciting or interesting.
Examples:
Mike, get a load of this: our friend Frank is being interviewed on the TV news right now!
Get a load of this: I've just found out that our teacher used to be a professional footballer!

Take note

The phrase take a load off your feet means to sit down and relax.
Example:
William, you look exhausted. Come and sit here. Take a load off your feet.

Interesting fact

According to the Food and Agricultural Organisation of the USA, 85% of milk produced for human consumption comes from cows. However, buffalo, goat, sheep, camel, donkey, horse, reindeer and yak milk is also consumed by people around the world.