An embarrassing, fairly unattractive female you've met on the Internet, whose presence you only tolerate for the purposes of sex.
"She's alright, I'm not gonna marry her or nothin'...just another schwaglissa."
"She's not bad in bed, but she's schwaggy like schwaglissa."
"Did you see that girl's outfit? It's fucking horrendous. Did she go shopping with schwaglissa?"