I guess this is throwing the same egg over again. (nakedpastor.com)
Also I've got the same egg / bunny / chick mould — so how many batches of the mould does the egg recipe make? (deliciouslyella.com)
If you want to investigate how the material the zip wire is made from affects the speed the egg travels down the wire, you'll need to use the same harness, same egg and have the zip wire at the same incline when you test each type of zip wire. (science-sparks.com)