A friend of mine who is atheist gets all wound up when the subject of Noah's flood comes up. He doesn't rely on scientific discoveries or explanations to deny that the flood happened, he uses his own logic.
Some of his statements(some of em are hilarious):
How long did it take him to travel the earth and collect all the animals?
Did he have to build other boats to transport animals from islands to his home to put on the big boat?
How did he get so many animals on that one boat?
How come the lions didn't eat the sheep?
Who shoveled the elephant shit off the boat everyday?
Did the rhinos sleep on the bottom deck or the top deck?
How many boat columns did the buffalo break rubbing up against them?
How many aquariums did Noah have?
How did he transport fresh water fish and salt water fish?
How much sand did he load on the ark to keep sand dwelling critters happy? Where did he get the sand?
What did the vultures eat? What did Noah eat?
Where did he keep the insects?
Why did he preserve roaches? Those things are nasty.
Where did all the water come from? Where did it all go? Where is it now?
How did Noah get Koala bears and kangaroos to Australia and American Buffalo to the west plains?
Did he drop off animals as they floated by different parts of the globe?