Boner sidler

When your significant other / husband gets a boner but he doesn't come right out with it. Instead, he snuggles against you until you feel his boner against you in a surprise fashion.

Me: I was watching Grey's Anatomy last night and my hubby boner sidled me out of nowhere!

Friend: Geez, what a boner sidler. Why doesn't he tell you he's horny and it's time to get some action?
Me: I know!