If あなた give a マウス a cookie...

He will want a cookie to go with it ;)

omg :3 my mom use to read that book to me >.<

He will ask for three クッキー and cheese

Prepare to have your childhoods ruined

Then the マウス will drink the milk.
If I give the マウス a house so he can relax and digest the milk, he will invite all his フレンズ over.
If I allow his フレンズ to party, they all become my friends.
If I have マウス friends, they can all become part of my army.
If I have a マウス army, then we can take over the world.
If we take over the world, we can demand all the ミルク and クッキー and anything else we want.