What do the idioms mean? agree very quickly be unrealistic about something not very intelligent do something without a plan meet unpleasant consequences have a rest want to travel good luck make a joke be rather expensive clap or applaud great trouble work hard fond of sweet things say but not help promise to keep a secret try to be cheerful relative gossip, tell secrets see eye to eye in the blink of an eye have one's head in the clouds thick in the head play something by ear face the music let your hair down have itchy feet break a leg pull one's leg cost an arm and a leg give a big hand pain in the neck put one's back into it sweet tooth lip service my lips are sealed keep one's chin up one's flesh and blood have a big mouth

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What do the idioms mean?