To's is a slang term that refers to the act of passing a joint, cigarette, or other smoking apparatus to someone else. There are a variety of synonyms for the word to's, depending on the context and regional language conventions. Some common alternatives include "passing," "sharing," "puff-puff-give," "hit," "drag," and "pull." Other slang terms for to's include "sending," "fading," "session," and "rotation." No matter what word you use to describe the act of sharing a smoking tool with friends, it's essential to be respectful of others' boundaries and preferences, particularly when it comes to use of drugs or other mind-altering substances.