On the bus to Penge

I'm on the top deck. Sitting across from me are two boys aged around twelve years old and a chic young woman who might be their big sister or aunt, they are talking and laughing and sound like they come from south London, she says:

There's this stuff called escargot, it's snails eggs and people eat it

that's disgusting!

it's like caviar which is fish eggs, you eat hens eggs, what's the difference?