Three very tough mice

Three rats are sitting at the bar talking bragging about their bravery and toughness.

The first says， "I‘m so tough， once I ate a whole bagful of rat poison！”

The second says， "Well I‘m so tough， once I was caught in a rat trap and I bit it apart！”

Then the third rat gets up and says， "Later guys， I‘m off home to harass the cat.”