Hydrocoele️- What does it mean when one is said to have water in his testicles and is it serious?

 
When you say “water in the testicles”, I presume you are referring to hydrocoele. Hydrocoele is a condition where fluid collects in the layers covering the testicle. It is not a serious condition by itself, though the amount of fluid can be enough to cause a large swelling. If required, it can be corrected by minor surgery. However, you will also need to determine the cause for the condition. If the cause is treatable, you should get that treated as well. However, in some cases no cause can be found. In all cases surgery will cure the problem of fluid collecting in the testicular sac.