These two snakes were having their customary morning slither through the grass.
One said to the other, "ere 'arry, what kind of snakes are we?"
Harry says. "What do you mean?"
The first one says, "Well, are we the poisonous type or the constrictor variety?"
Harry says, "I'm not quite sure; why do you ask?"
His friend says, "I just bit my lip!".