True , but doesn't quite explain why the table is so sturdy when you take it out of your house but goes all wobbly when back home ?
Table is sturdy out of the house because you're careful to put it on a nice solid surface and treat it with respect. At home, the table gets moved around a lot and sometimes it's put on a surface that maybe isn't properly flat, so it then gets all wobbly. What that table needs at home is some TLC for the floors, make sure they're providing a surface the table deserves.