A house guest who frequently finds themself at one's house during a steak dinner. A telltale sign of a steakubus is anyone who goes groccery shopping less than twice a year (ie, 18-24 year old males). Steakubi can pose a significant threat to ones red meat consumption, but often suffer from crippling gout and/or heart disease before any serious damage is done.
"Hey Gary, how do you keep a steakubus at bay?" - Chuchi
"I keep a top ten list of steakubi on my fridge. Gotta be vigilant of that shit." -Gary