it means I follow you. but normally it is just used between young people or bad guys...... when someone is more powerful than you, you can say 我跟你混 to him. it means you will follow him, you would do what he did. you look him as kind of your boss. for example, 你好厉害，我就跟你混了。 you are so powerful, I will follow you. 混 means mix up. for example, you have a very good friend, you two stay together every day, every time, everywhere. so someone else can say "你俩每天都混在一起". it means you two always stay together. 跟 means follow. 我跟你混。I follow you so you are my boss. if you are a bad guy, maybe you join some crime-group, so you have to follow somebody who is your boss, then you can say 我跟somebody混。 我跟Tom混。 then Tom is your boss. normally, we say this for joking. for example, when your colleague has done a very good job while others failed, then you could say 我以后跟你混了 to this colleague. this is a kind of praising: wow you are very good, 我以后跟你混了。 something like this.

usually we use it you and the one you are willing to go after.it means i will follow you to do thing youcan lead me .

混 is short for 混合 here = to mix, to go together, to party (slang) 跟 你 = with you

我跟你混= I will follow you. we use 我跟你混 usually between friends. Sometimes for joking. For example, 例子1： ---张兄目前在哪里高就？ ---混的不好，现在干中学校长了。 ---哇！ 混的这么好？我混了这么多年，还只是个打杂的呢。你要是不嫌弃，我跟你混吧。 例子2 ---你一个月就挣那么点钱？别干了，跟我混吧。 跟我混吧=Follow me (it means " I am your boss")

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