A/N: I'm not exactly a guy, but I can imagine that were you stuck with your voice breaking/changing for several years, you might get rather desperate. And we all know that Izzy has a high voice in both the original and the dub, so...
Background: TK has abilities regarding time. His voice changed way before Izzy's started to.
"Please?"
"No."
"Come on, aid a friend?"
"No."
"I'll stop bugging you..."
"Izzy, please don't make this harder than it has to be. Just deal with it naturally like the rest of us and it'll be fine."
"But you know what the time ratio here is!" Izzy pleaded, down on one knee and practically begging. "It'll be years before I sound normal again!"
To add to his point, Izzy's voice dramatically broke and dropped down an octave twice as he spoke.
TK winced. "Really though, I don't know enough about anatomy to safely mess around with your time and aging, and it's just better for it to happen normally, in my opinion."
Izzy let out a horrified wail.
"Stop overreacting!"
"I hate my life!"