A new mishnah: One who takes on being a nazir using euphemistic language - may indeed take on nezirut for his whole life, with some question as to how often he might be eligible to cut his hair/shave his head - depending on the phrasing used to undertake the nezirut. Likewise, one can undertake longer periods of nezirut, depending on phrasing. Also, one who undertakes nezirut "forever" can also delimit the time, depending. With the possibility of one long nezirut or multiple repetitions of 30-day periods of nezirut. Plus, different ways of counting, and different shapes of houses supporting the different ways of counting.