Sticking tongue is some part of tibet as respect. This tradition came from king Lang Dharma time. As said the killer of King Lang Dharma his or her tongue it's written ཨོྨ་. That's why doing that time they must show. I heard this from my father. I don't it's Real or not.
@@tibetanphoser ah i see cause like when i was in school the teacher would often say to students who stick their tongue out when being scolded, “why do you do that?” “you look stupid” stuff like that you know so idk it seemed off when i saw the girl doing that