The photo shows a female athlete, likely a Turkish athlete, in a celebratory pose after winning a competition. She's holding the Turkish flag, wearing a sports outfit, and has visible tattoos. The tweet, written by a user named "Sabri Amca" (Uncle Sabri), criticizes the way the victory was celebrated. The humor lies in the contrast between the expected (or perhaps desired) traditional comportment and the actual outcome. The joke, in essence, is: "Whether you call me a religious bigot or a reactionary, I won't accept this championship victory. Now the modern people will say 'it's okay to wear a headscarf/hijab,' but my nephew, there are rules and respect for everything, don't celebrate with your underwear showing." The implication is that the celebratory behavior, the way she's holding the flag in a certain manner, is not acceptable, perhaps too revealing in some people's views, and it clashes with expected modesty. The use of "kilitla" (underwear) is the punchline, highlighting the apparent discrepancy between the victory and the displayed behaviour.