From Longman Dictionary of Contemporary Englisha glutton for punishmenta glutton for punishmentSUFFERsomeone who seems to enjoy working hard or doing something unpleasant → glutton
Examples from the Corpus
a glutton for punishment• Talk about a glutton for punishment.• Being a glutton for punishment, a few days later we rounded it off by doing the Danube Knee bend towards Budapest.• Steve Jobs is obviously a glutton for punishment. 