My parents have two chihuahuas, Holstein and Longhorn, neither of whom seem to like me much on the surface because when I'm here, my parents pay too much attention to me and not enough attention to them. The first time I met Holstein he stole some underwear from my suitcase and paraded it around the living room. Longhorn kept forgetting who I was and barking angrily at me every time I changed my shirt.
But they've sort of accepted me, and now they do the Butt Bond.
Chihuahuas are ostensibly bred to like people, to bond closely with a few humans and be affectionate lap dogs. Holstein and Longhorn definitely love my parents and climb all over them, but with me they're a little more conservative. With all of us, they'll do a kind of bonding behavior where even if they don't want to be petted or if you refuse to pet them, they'll sit right up close with just their butt touching you, and if you move they'll shift so that their butt is still touching you. If I sit in the middle of the couch, they'll get up and sit one on either side of me, butts touching my legs, looking directly away from me. BUTT BOND.
They do it to each other too, which is extra hilarious, because Longhorn loves Holstein SO MUCH and Holstein barely tolerates Longhorn's existence. But he will tolerate Longhorn sitting down next to him as long as only Longhorn's butt is touching him.
THE GREAT CHIHUAHUA BUTT BOND.