Grand-dogging:derived from the definition this is where people meet up in car parks and watch eachother having sex. Sometime other people join in, but its mainly about watching and getting off on it!
Except in Grand-dogging the participants are OAP's.
"The pensioner became highly addicted to grand-dogging."
Grand-dogging is a past-time enjoyed by the old age pensioner
The act of shoving a large amount of poop back into one's ass. May be used as torture, pleasure, or a method of passing time. May also be done alone, with a partner, or in large groups of self breech loading or mutual breech loading. May also use oneselves poop, the partners poop, or a combination of both people's poop.
"Bob" was bored one day. "Bob" took a massive dump. "Bob" caught his own poop in his hand and had breech loaded it back into his ass by the act of breech loading.