Joined at the hip

Joined at the hip

Is used to describe a Farang-Thai relationship that is based on the exchange of sex for money. Another way to put it is: “Is your boyfriend a live-in prostitute?” (Beachlover).

For dogs, joined at the hip after sex is reality! I never saw this in Europe, but during my holidays in Thailand, I saw two dogs joined at their ass (now I know better: penis and vagina) a few times. First I couldn’t make sense of it, but recently I saw two dogs fucking, and then the top got off, and they rolled on the ground to get in a more comfortable position:

In another case, I saw them joined and then becoming disjoined. In this case, one dog was smaller than the other, so the larger dog dragged the smaller dog behind him:

Searching on Wikipedia, I found:

At the time of penetration, the canine penis is not erect, and only able to penetrate the female because it includes a narrow bone called the "baculum", a feature of most placental mammals. When the male achieves penetration, he will usually hold the female tighter and thrust deeply. It is during this time that the male's penis expands and it is important that the bulbus gland is sufficiently far inside for the female to be able to trap it. Unlike human sexual intercourse, where the male penis commonly becomes erect before entering the female, canine copulation involves the male first penetrating the female, after which swelling of the penis to erection occurs, which usually happens rapidly.[3]

Male canines are the only animals that have a locking bulbus glandis or "bulb", a spherical area of erectile tissue at the base of the penis. During copulation, and only after the male's penis is fully inside the female's vagina, the bulbus glandis becomes engorged with blood.[4] When the female's vagina subsequently contracts, the penis becomes locked inside the female.[5] This is known as "tying" or "knotting". While characteristic of mating in most canids, the copulatory tie has been reported to be absent[6] or very brief (less than one minute)[7] in the African Wild Dog, possibly due to the abundance of large predators in its environment.[8]

When the penis is locked into the vagina by the bulbus glandis (when the stud is "tied"), the urgency subsides[clarify] and the male will usually lift a leg and swing it over the female's back while turning around. The two stand with their hind ends touching and the penis locked inside the vagina while ejaculation occurs, decreasing leakage of semen from the vagina.[9][10][11] After some time, typically between 5 and 20 minutes[12] (but sometimes longer), the bulbus glandis disengorges, allowing the mates to separate.

http://en.wikipedia.org/wiki/Canine_reproduction

Mystery solved!