For many people, the humble colon is just another name for your large intestine, but in the English language the colon, or :, is most commonly used as a punctuation mark to introduce a list or expand on a sentence. However, it can do much more than this! They can be used in quotations in formal writing and even to punctuate times and references.
For a short summary of how to use a punctuation colon in your sentences, grab a cuppa and watch this short video from Grammar Monster.
I dare you to use a punctuation colon today!