Putting crystal meth in your anus (ass), either in solid form or dissolved in water, resulting in a quick and intense high...and potential anal irritation. Having sex without a condom when you have an irritated rectum increases your chances for HIV and other sexually transmitted infections (STIs). Also, undissolved crystal in your ass can cause a condom to break.
hooping crystal (meth,speed,gak,sideways,fast etc)may cause a tear in the anal lining that can easily go unnoticed. Lowered inhibitions and barebacking (unprotected sex) can make for a risky combination for transmission of HIV and STIs.