get bent out of shape vs vent one's spleen

get bent out of shape

verb
  • To take offense; to become angry, agitated, or upset. 

  • Used other than figuratively or idiomatically: see get, bend, out of, shape. 

vent one's spleen

verb
  • To openly express pent-up anger, often on an unrelated matter or person. 

How often have the words get bent out of shape and vent one's spleen occurred in a corpus of books? (source: Google Ngram Viewer )