[What am I? II]

Cereal?

It's the last bit "If I tip over, you may never hear the end of it". Thats getting me I think theres something more to that...

[Achilles and the Tortoise]

Weird...

[What am I? II]

Water would push over infant...

Found deep within ice.. duh

Not sure about last part hint seems to say saltshaker which makes me think about the machines they use to melt ice on roads....

Probably trying to catch a fish in air...

[A Brief Exchange of Letters]

coke,cone,cato,____?