Guinness - Women "Fish on a Bicycle" - (1996) 0:60 (UK)

Women work as construction workers, coal miners, and bin men. After work, they play darts and pool at the pub, do arm wrestling, have beers, and have a jolly good time. 

Irina Dunn's bathroom wall quip: "A woman needs a man like a fish needs a bicycle" appears, and then the scene changes quickly as empty maternity wards are shown.
 

And a fish is seen riding a bicycle at the end as a stinger.

Client: Guinness 

Song: "I'm going to wash that man right out of my hair" by Mitzi Gaynor

Ad agency: Ogilvy & Mather

Director: Tony Kaye