A sexual act named after the mormon God Joseph Smith. To Smith on ones partner is the christian equivalent to the pull and pray method or to skeeton in African American slang.
I'm not ready for kid number 13 so when I was ready I pulled out and Smithed all over her back.
When posting on a message board commenting on something someone else has said without quoting it and your comment showing up on the next page. Often times being smithed can lead to interesting results of embarassment or random confusion.
"He packed so much in my bun I thought I was going to explode.*