When is a hill not a hill

[HaworthBantam]

Just had a chat with my dad (I think he"s been to the pub) and he said "A boat is what you get into when the ship is sinking".

I think somebody must have told him that one because he"s not usually that funny  

[Roscopiko]

...

His answer at the time was that if a vessel can be carried by another vessel, then it"s a boat. If it cannot be carried by another vessel then it"s a ship. ...

So what ship would this boat be carried on?  

Maybe this one?

[Hooligooner]

The paddle boat is an inland vessel, ships are always sea going.

That"s a complete guess by the way.

[kinboshi]

A life boat and a tug boat are both sea going.

[Cyntaf]

I"d rather be in a lifeboat Dan.
Unless i needed a good Tug

[Santino67]

They"re both ships................
except for the boat  

[Hooligooner]

A life boat is carried by a ship, the previous explanation still holds true.

Not sure about a tug boat, but there"s a joke in there somewhere.

[biffa85]

saying boat is not nearly as bad as saying I"ve got a ship.....so boat it!

[kinboshi]

If you hit a boat on the river, ship it!!

[jacklevel06]

I"m  over the hill apparently