An overweight person who is about as wide as they are tall, hence creating a somewhat spherical shape -Yet have supreme denial and arrogance when it comes to their own appearance and their ability to attract members of the opposite sex. They often walk with a strut and wear minimal clothes in public places (eg. stubbies and no t-shirt) and always 'punch above their weight' (excuse the pun) when looking to pick up.
"Put your shirt back on Spheroid!"
by Sargeant Pepper February 05, 2010