A Tele-tuggy is essentially a hand job or "tuggy" given to a recipient who is watching television.
This is a play on the word "Teletubbie" which may give the illusion that a "tele-tuggy" is an inocent act which is not sexual in nature; making the persuit of tele-tuggies easier.
Cindy: Dave, why don't you turn off the TV and come to bed?
Dave: South Park is on... I have a better idea! Why don't you come over here and give me a tele-tuggy?