To nose exhale into one’s ass while licking their balls.
Jim: How did your date go with Frank last night? Tom: Awesome! Not only did Frank pick me up in his cute little blue two seater, after dinner he took me home and treated me to a nelix with a reacharound.
This word is a portmanteau combining the wordsEnemy and Mistress. A failed attempt with a girl you are trying to date and must avoid at all cost due to awkwardness and humiliation.