Abbreviation of "Sweet Home Alabama", normally used as a reply when someone says something that could be taken as 'dirty' while talking about a relative.
Person 1: "So my cousin and I were messing around on the couch-"
Person 2: "S.H.A?"
Person 1: "Nah, not like that, don't be gross.."
When a person gets a nosebleed during sex and makes out with the other person; without wiping their face.
"Did you Carol's face last night? She totally got a Love Volcano. She should get tested for STD's"