Your teacher added soap to the water, which holds the bubbles together, and makes a wonderful thick foam.
The screws turned tirelessly, churning the black water into a thick foam.
In the living room was a conversation pit and white shag carpet laid down over thick foam.
Great patches of brown scum and thick foam floated across the water.
They then poured the drink back and forth from a cup to a pot until a thick foam developed.
It was a thick, wavy foam around his face and shoulders.
His mouth was open and a thick white foam still issued from it.
Walls are injected with a thick pink foam based on whipped sea water.
The egg whites should be beaten briskly until they form a thick foam.
The easiest way to do this is to stuff strips of thick foam between the two sash frames.