Waiter, there's a floofy in my soup!
A floo--- what kind of monster would eat that?
*gasps* WAITER!! THERE'S A WHITEBOARD IN MY SOUP!
A whiteboard in your soup, you say? Shall we hand you a marker to accompany that entree?
Waitress there's a hot air balloon in my soup??
As demonstrated above, you describe to everyone what has fallen into your soup! Make it spicy, make it ominous, make it... interesting, but let everyone know what you have discovered in your soup??
Also, if you want to, you can react to another customer's soup deliciousness that their sever has brought to them >:P
*sits down in front of a bowl of soup*
*screams* WAITER!!!!! THERE'S A FISHING POLE IN MY SOUP!!