What does it mean when a guy sneaks up behind you and pokes you in the waste?

Anonymous
Then looks at you out of the corner of his eye and smiles as he keeps walking...

The guy I like did this to me the other day. That's why I'm curious...he also smiles a lot, remembers little things I tell him, shares about his family, gets jealous when I talk to other guys, notices changes in my moods, says sweet things to me, leans in when we talk...stuff like that.
What does it mean when a guy sneaks up behind you and pokes you in the waste?
2 Opinion