LOL Yeah, I've noticed that cussing never helps, but I keep trying. I think your problem may be related to the dip in the line. Even if that isn't the problem, it needs to be fixed. That white plastic (PVC) plug is the clean out, but now the plot thickens. Drain snaking is really not a DIY job. The proper equipment is disaster waiting to happen in the hands of a novice. You risk serious injury to yourself, damage to the drain, and damage to the auger. I'm sure you are hoping for this to be a DIY job, but sometime us DIYers reach a point where the task outweighs our abilities and the tools needed require skills and experience we don't have. My sincere advice is to get a professional plumber who can not only clear the drain properly, but can diagnose and correct what the cause of your clog is whether it is the dip or putting things in the drain that should not have been.