Bruising

[Oldersack]

can someone explain me what bruising is coming under the sack and not at the insertion needle point ? Thats sometime really strange though

[Boomber_mod]

A bruise is a hemorrhage under the skin from damage to a vein or capillary from a needle puncture or other mechanical action. It can be of different sizes, blue-green-red in color!

[5Lsal]

If the bruising isn't directly at the injection site then you may have nicked a vein further in. The bruise is caused by bleeding under the skin coming to the surface and will take a different route depending on the placement and tissue around it...be careful with needle placement because there is a sizeable vein going to each testicle. Hitting one of those would cause more bleeding and possibly result in serious complications.

[Quax]

Another chance is that while the scrotum expanded during inflation there was a blood vessel torn.