in one
1. A game where the only opponents are two people playing against each other.
2. Also know as speedballing; a mixture of cocaine and herion, most often injected.
Synonyms for one on one
On this page, you will find 30 slang terms related to in one. Some of the top words include: Nutball, nut tag, diablo 2, schlock ball, teener, and 25 more.