Attach 2 MCs

How do I attach 2 MCs to each other?

I don’t think I want aatachMovieClip because that seems to:

add an instance of the symbol programmatically. The attachMovie() method adds a new instance of the specified symbol as a nested movie clip of the object from which the method is called.

I want to say if MC_A bumps into MC_B, then MC_A should attach itself to MC_B and follow it wherever it goes.

For my fishing game, I’ve tried just saying when there is a hitTest the second one’s _y and _x equal the first one’s, but I have some boolean vars that cause probs. The bools say if there is a hitTest, no other MC should have a hitTest.

Is there some special function for this?