Meaning of slip inside the eye of your mind; come undone; caught in the undertow

[Swimming]

Hello

I was listening to some songs and I found some expressions that I don’t understand.

Can you help me to understand them and can you give me some examples of everyday sentences with these expressions?

1. slip inside the eye of your mind
2. come undone
3. caught in the undertow

Thanks a lot

[Mister Micawber]

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1-- not an everyday expression; just composed for this song. Rough meaning: understand you intimately.

2-- Come undone = disarticulate; become very emotional

3-- caught in the undertow = pulled out to sea by a strong undercurrent from wave action; affected by an action or emotion against one's wishes.
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Native English teacher at Mister Micawber's