Hi All
This one is doing my head in.
My latest guess for the four letter word is CHOP ( don't laugh here's how lol!)
The "O" is in boys but not in girls.
The "P" is in poor but not in rich.
The "H" is the symbol for Hydrogen, so if you had this you could fly (hot air balloon)
The "C" ( sounds like sea) the animal seagull can drink this, but we can't.
Ok it's a obscure, but i am getting desperate now ! ![Smile [:)]](/emoticons/emotion-1.gif)