sprayer

On each wiper, there are 2 nozzles that spray wiper fluid on my windshield. They look a bit like these: http://ecx.images-amazon.com/images/I/61jl4k2eDWL._SX466_.jpg I had the top nozzle off to unclog it and I clamped it shut but now I cannot open it to put it back on the wiper. I've used a...