Top Definition
A fat boy who pretends that all of his fat is actually muscle when it clearly isn't. The boy does not necessarily have to play rugby but it is a bonus if they do. When saying it you should hand quote and even do a cheeky wink
Greg: "hey wanna see how buff I am?"
Susan: *hesitates* lol k
Greg *lifts up shirt and all his fat rolls start to spill out*
Susan: *gasps in disgust* holy shit you're such a "rugby boy"!!!!!
by Banton!x February 21, 2017

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A young male university student, usually but not neccessarily a rugby player. Often a rah with deep pockets. Hard drinkers and notorious womanizers, they have a reputation for spending more time at the pub than in lectures/class. Note that not all rugby players are rugby boys.
I've never seen rugby boys in the library before!
by Tomdidiot March 31, 2011

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