Any sexual act performed outside of one's own main relationship. Also called cheating, but with less negative implications...
Phil: Damn, I am going to hook up with that biznatch for some side action...

by Trey Bone June 30, 2006
Get the side action mug.
1. Side Hoe.
2. The act of putting a specific activity or event before your significant other, making that person the side action.
3. Hobbies.
1. Never would I want to be yours, or anybody's side action.
2. You could be my side action, after I fulfill my obligations when in comes to responsibilities.
3. Gardening is a side action I would like to take up.
by PineappleJuice March 13, 2015
Get the side action mug.
When a man has a serious girlfriend or wife and cheats on her with another woman. The other woman is desperate and a little chunky, but much less maintenance.
She thought he was in love with her and was going to leave his wife but then realized she was just chubby side action.
by PMN February 23, 2006
Get the chubby side action mug.