In the fourth commercial in Egg's popular new campaign, we're back at the Egg research lab, where the scientists are studying two more guinea pigs that "might have overspent a little".

The bespectacled Scandinavian brain-boxes are monitoring the conversation of a whole new type of cuddly rodent: gay guinea pigs. The couple seem to be trying to conceal their identities, as they discuss their financial affairs in silhouette in a dark living room. They're ashamed of their overspending on 'champagne truffles' and other frivolities. Thankfully, they too get hold of an Egg card, with all its financial bonuses, and one of the chubby camp pair is able to switch the light on and reveal them in their big gay glory! They have truly found their light at the end of the tunnel with their monetary affairs.

The look was achieved once more by compositing the guinea pigs' heads onto humans in guinea pig suits in Flame, then placing them into the 3D lab environment built by Glassworks in Softimage XSI.