look up any word, like half chub:
 
1.
esn
Educationally Sub Normal - a special person.
Timmy is in our ESN class.
by Paul January 01, 2004
 
2.
esn
Abbreviation for eat shit noob.
Ash:They killed me twice now.
Paul:esn
by ash_ashy-boy96 June 06, 2010