A person who is really good at the game they are playing, or an activity.

Also: being really good at Anime Battle Arena on roblox, ABA.
Example 1: YO HE'S LIKE SHANEBOY98
Example 2: call me shaneboy
by Romitsu June 5, 2022
Get the Shaneboy98 mug.
Shaneboy98 is a word to describe a male, female, or non binary person who has such a high rizz deficiency, it has become a health hazard. Calling someone a shaneboy, or a shaneboy98 means they have so little rizz they cannot carry on their bloodline, thus making them both infertile and unable to carry out their bloodline. This word comes from a user in a discord server for the roblox game 'Anime Battle Arena', already cementing them as a male with no rizz. Additionally, this user is 0-7 when it comes to women, and this is only documented on this server (for which one's standards must be incredibly low).

TL;DR: Shaneboy98 is a term to describe a person with negative rizz, as Shaneboy98 was the first documented case of this strange and saddening phenomenon.
Joseph: Hey, I heard Robert asked 3 girls out today, and got denied by all of them, even the nerdy, quiet one.
Antonio: Oh wow! I had no idea he had so little rizz.
Joseph: Yeah, he really is such a Shaneboy98.
by yaboinani February 8, 2023
Get the Shaneboy98 mug.
A person who acts identical to Bleach character Ulquiorra
"Yo is that Shaneboy98?"
by 456whydoishit July 9, 2022
Get the Shaneboy98 mug.