The result of a male ejaculating
First known usage was in the mid 1990's from a woman who lived and worked in Virginia, USA.
Quoat: " I wish the damn people in the laundry department would get out all the spamoogi stains in the sheets!"
Pronounced : Spa-moo-gee
Jesus..., did you see the load of spamoogi I shot on her Trampstamp
Crap, I got spamoogi all over my clothes!