Electric Eel means: Ending in electrical orgasm is maturbation, where semen joins the circuit connecting an outlet to your dick. You will need to make sure you aim for the right target by masturbating into an electric socketoutlet. (in Open Dictionary, added by Gibbous)

What else does Electric Eel mean?

A man masturbates alone in a hotel. Just before he gets a nut, he puts his penis onto the nearest electrical outlet and ejaculates. His whole body is shocked and then he feels a pleasant electrocution. It could take as long as 30 minutes to recover. (in Open Dictionary, added by Greyson Ballard)

A long cylindrical freshwater fish (Electrophorus electricus) In northern South America there are organs capable of producing a strong electric discharge that stuns prey. (in Merlin Dictionary)