Waving a chipolata in the Mersey Tunnel 

The sexual act, when performed with a woman of generous genital proportions. Or a man of diminutive proportions. Or both.

She was so loose I thought I'd have to strap a board across my arse to stop myself falling in. It was like waving a chipolata in the Mersey Tunnel.

Waving a chipolata in the Mersey Tunnel by Kojak October 28, 2003

Wavin' Flag 

A powerful and moving song - easily the greatest produced by K'naan.

When I get older I will be stronger. They'll call me freedom
just like a Wavin' flag

Wavin' Flag by hadomino December 22, 2010

hand waving

Also written handwaving. In formal conversation / speech omitting important details about the subject matter either because 1) the audience is perceived to be ignorant 2) the speaker themselves is not well-informed on the subject matter or 3) a little from column A and a little from column B.

The math professor only gave a partial description of the proof as she used hand waving to get through the most difficult part and told the students to study the remained of the proof at home.

hand waving by demongolemz October 21, 2011

Wavy, the Waving Crocodile 

Puppet character from The Late, Late Show with Craig Ferguson

Wavy, the waving crocodile

Wavy, the Waving Crocodile by Chunks10 July 24, 2010

Waviness 

The quality or state of being Wavy or Wavey.

Max B: So you think you wavy huh?
Cooli Carlito: My Waviness is untouchable

Waviness by LaxativeReviews May 1, 2021

wacky waving inflatable arm flailing tube men

A more common name for the advertising device that is also known as an Airdancer. It is a plastic humanoid shaped hollow 'bag' that when supplied with an air flow inflates and appears to flail around.
Uses include:
Attract Customers to your business.
Make a splash at your next presentation.
Keep grandma company.
Protect your crops.
Confuse your neighbours.
African American? Hail a cab.
Testify at church.
Or just raise the roof.

"Thanks to a shipping error I am now currently overstocked on wacky waving inflatable arm flailing tube men, and I am passing the savings on to you!!"

wacky waving inflatable arm flailing tube men by Al Harrington February 21, 2008

waving my dick in the wind 

Looking stupid or dumb.

"Did you see Tom, he forgot his lines and just stood there waving his dick in the wind"

"You just left me there, I was there all alone waving my dick in the wind"

waving my dick in the wind by cockshitballs August 4, 2007