SiO₂

sand; glass; quartz; amethyst; silica; silicon dioxide.

People, go build a SiO₂-castle.

by hydorus shui October 7, 2023

SIO

Sex in Opposition: the (non)-act of (non)-sex between two or more people. SIO is typified in musical form by songs such as News from Babel's "Dragon at the Core" and Domestic Stories' "The Same River"

I've got the latest order from ReR in! Let's put on the Necks and practice SIO.

by theoneofones July 30, 2022

de sio

A spicy Italian small dick

De sios are not for everyone, they are for a select crowd with strong taste buds.

by SavagestSimey March 23, 2017

sio

Extreme sexy beastly mf

Man, Sio gives off such a big dick, dilf energy!

by txmmmm November 21, 2021