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To have itchy feet
means feeling a strong desire to travel or move to a new place because you're bored or restless staying in one place for too long or it might be the urge to leave where you are and go somewhere new, often because you want adventure or a change of scenery.

Examples:
1- David Attenborough, a famous British documentary filmmaker, must have itchy feet—even in his 90s, he’s still traveling the world to film documentaries in the most remote places!
2- After three months of sitting on the couch and watching every possible show on Netflix, Kevin had itchy feet and started planning a trip to the grocery store like it was an exotic vacation.