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A common procedure where one partner lies down on their back on the floor while the other puts their butthole directly above their mouth. The partner then proceeds to diahrrea into the mouth of the other partner. The receiver than has the option of swallowing it or throwing it back up into the other partner's butthole where it came from.
My mouth smelled amazing after Holden's Hot Niss last night!
by Alex Bernard Zafran March 11, 2007
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Jun 14 Word of the Day
Referring to women who are sexually or romantically attracted to other women. Applies to both lesbians and bisexual women, as it is only the same-sex attraction that matters, not any other attractions the women may have.

Originates from the Greek poet Sappho, a bisexual woman from the Isle of Lesbos, from which we get the term lesbian.
The sapphic women greatly enjoyed each others company.
by whatisdead June 25, 2015
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2
When something is really hot or cool.
The Ferrari 575M Maranello is hot niss.

"Yo i just got a million dollars"
"Hot niss"
by Guinzo March 31, 2003
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