A piece broke off of the weed eater, and I called to order it, thinking the number on it was the part number.
Turned out it wasn't.
The guy said, "Let's try this, what does the part do?"
Doesn't he know I'm BLONDE, damn it?!
I said, "Ok, but this isn't going to be pretty. You start the weed eater, then you press this thingy and that makes the thingy with the cord in it go around."
He said, "And which thingy do we want?"
I said, "The thingy you press."
He said, "Ok, that thingy is a throttle trigger."
I looked online a while ago and found it. Lo and behold, he was exactly right!