The insertion of toilet paper or a sock between ones buttcheeks to prevent and absorb excess moisture and/or leakage from ones anus and/or vagina.
Sarah was quite embarrassed when her butt suck fell out of her pant leg in line at the grocery store. It was really nice of the gentleman to let her know.
The act of a male dressing up in a tuxedo filled with ranch and putting a vacuum nozzle up a females anus until she screams, “OH DADDY THATS ONE CLASSY ASS BUTT SUCK” as a safe word before her intestines are sucked up by the vacuum.