He knows he's a dad when...

... The first two songs he learns to play on his fabulous new purple ukulele are 'Twinkle Twinkle Little Star' and 'Three Blind Mice'...

He knows he's a dad when...

... His little girl looks up, points her finger at him and says in her most gentle baby voice, 'Da-da...'

He knows he's a dad when...

... He can tell why 'that's not my penguin' from the other side of the room...

He knows he's a dad when...

... He is so easily substituted by a small rubber penguin...

He knows he's a dad when...

... He finds himself pondering whether not having anything to cry about is in itself something to cry about...

He knows he's a dad when...

... His evening routine involves a 'milk count'...