{"id":"79fe15222cb182783c5d3e133285a872","text":"The pop you hear when you crack your knuckles is actually a bubble of gas burning.","source":"djtech.net","source_url":"http://www.djtech.net/humor/useless_facts.htm","language":"en","permalink":"https://uselessfacts.jsph.pl/api/v2/facts/79fe15222cb182783c5d3e133285a872"}