I have a bubbling sort of thing that makes my left testicle drop longer then my right testicle?

Let me explain: Most of testicle dose not hang perfectly symmetrical to each other’s. If you have one large testicle is bigger than the other for a reason. Varicose veins, hydrocele, tumors and infections.

Bubbling thing: My best guess when you say you have a "bubbling sort of thing" in your scrotum is that you have one or more dilated veins. These are called varicose veins or 'varicocle'. They are very common (about 10% of the population), usually do not cause pain but at times may ache with congestion. They can lead to venous congestion with a resulting increase in the bulk and weight on that side of scrotum.

Varicocele: Dilated vein. More commonly on the left . If not painful, likely little to worry about, although may be associated with decreased fertility.

Hernia: This may be a hernia. You need to see your doctor to confirm that's what it is. If it begins to hurt or change colors, see a doctor immediately.