look up any word, like cunt:
It is a term which applies to a male who a female feels is like her sister. It is a term of enderment which signifies a close, nonsexual bond between two unrelated people of the opposite sex. Similar to Broseph.
Thanks for doing my hair, your the best sisen ever.
by Brisban June 05, 2009

Words related to Sisen

best buds brah brother sister tight