I can't help thinking about the name wacker without remembering the lower wacker drive car chase scene from the movie the blues brothers
I grew up on weed whacker. Most people around here call it a weed eater though. I'm pretty sure you just made up whipper snipper. But to answer your question, whipper snipper is probably the dumbest thing I've ever heard. Slightly dumber than "the earth is flat."
I'm on vacation. You'll also notice I'm capitalizing sentences; that's a sure sign that I'm posting from my phone.
If you choose between these two options, then the lawnmower is the best. The fact is that the lawn mower effectively mows the lawn and it is also more convenient to use than a trimmer. If we talk about hard-to-reach places where weeds and grass grow, it is better to use a trimmer that will easily solve this problem. Over the past few years, I have only used a trimmer and am very happy with its performance. The trimmer effectively gets rid of weeds at the tile joints, along the fence and in the corners. You can find more information online and decide which option is best for you. Be sure to tell us what you decided to choose.