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Hot Sports Opinion. Can be used to describe any controversial opinion stated with supreme conviction in its truth.
Bob got drunk at the Christmas party and started spouting some HSOs about how the elderly should be burned for fuel.
by Thad Blakeley August 08, 2005
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Janice: Todd is such a jerk. Why are you dating him?
Leslie: He's an hso boyfriend.

Jordan: So, do you think you and Sam will ever get married?
Paul: No! We're just hso. I'd never marry her.
by trout soup November 07, 2010
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an high school organisation
a group of people who get together and bond as a sisterhood or brotherhood
Emily you should really join a HSO. Its really fun!
by A FEMALE With Knowldedge!! October 16, 2017
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