What does is mean when you are a 'tugboat'?

Question

When somebody says, you are a 'tugboat' what does that mean?

Answer 1

I've never heard anyone say that but I'd assume they meant you get used? Tugboats pull people along and don't really do anything else >.>

Answer 2

I'm sure your sister was referring to their stature. Shawn is strong and short and built, much like a tugboat which is a small powerful boat.