What do you mean I can try it on?

Is it okay? Me? Try it? They? Open? May I try it on?

The phrase try on is a verb+preposition. If you want to add a noun to this phrase, you can put it in the middle or behind it. If you want to add pronouns, you must put them in the middle.

Tyrone's habitual collocation:

1, try? It? Open? Be rude (to sb); Play tricks; cheat ...

Children often? Try it? It? Open? With a new teacher.

Children often try to tease the new teacher.

2. try? Your luck needs a chance.

What did my grandparents move to Canada for? Try it? Their luck.

My grandparents immigrated to Canada to try their luck.