Why is Neil Finn wrestling his son Liam in his underwear?

Neil Finn wrestles with his son, Liam Finn, for the Wrestle With Dad music video.

Liam Finn's hilarious new video features him, his famous father - and little else.

The video for Liam's latest single Wrestle With Dad was released on YouTube overnight and features him and the Crowded House front man fighting, biting, wrestling - and mock pashing - each other wearing just their underwear.

A scene from the Wrestle With Dad music video by Liam Finn.

A scene from the Wrestle With Dad music video by Liam Finn.

Filmed on a Greek beach by younger son Elroy Finn, the clip sees the elder Finn putting Liam in a choke hold, wrestling him into the water and attempting to drown him.

A scene from the Wrestle With Dad music video by Liam Finn.

A scene from the Wrestle With Dad music video by Liam Finn.

In retaliation, the younger Finn bites his dad on the leg, puts him in a choke hold, and tries to tear his red underwear off.

The song comes from Liam's latest album The Nihilist, which came out in 2014.

A scene from the Wrestle With Dad music video by Liam Finn.

Watch the music video for Wrestle With Dad by Liam Finn:

- nzherald.co.nz