The beauties took on a spelling bee based on their respective geek's interest. Each time they misspelled a word their geek would receive an electric shock, and if they got the same word wrong twice in a row they would be knocked out of the challenge. The geeks then took part in a biker race, which had the beauties construct a bike and sidecar for their geeks to ride in, with the first beauty to finish giving their geek an advantage in the race. The geeks were to carry members of the HOGS motorcycle gang in the sidecar, with the geek whose partner finished building the bike first having the advantage of carrying the lightest biker, and the heaviest biker riding in the bike of the geek whose partner finished last. After the race the geeks were offered immunity; the first geek to step forward to have their beauty's name tattooed on their body would go through to next week. Lachlan took the challenge much to everyone's surprise, getting Sarah's name tattooed on his buttocks and consequently causing much drama in the house.