The photo is a screenshot of a WhatsApp chat, specifically a group chat. The user "kubra" has posted a message, implying that they've finished dealing with some issues or topics *in their head* (kâfada bitirmek), rather than actually discussing them on WhatsApp. The joke lies in the messages that follow. Several people in the group chat reply with good night messages (iyi geceler), but their responses are very personalized, using endearments like "aşkım" (love), "bebeğim" (baby), "kraliçem" (queen) etc. The implication is that, since these messages are expressing affection and care, the speaker is not really addressing any real issue, but rather playing the part of a caring (and possibly flirty) partner. In essence, the humor comes from the contrast between the initial message about dealing with things in the head (suggesting a heavy heart or stressful situation) and the sweet, emotionally charged responses from the group chat members, which are likely superficial and emotionally charged to be flirty or to convey affection.
"İyi geceler" bölümü bitmiş, şimdi "Günaydın" bölümü başlıyor 🤣
Bu kızın hayatında her gün bir "iyi geceler" partisisi oluyor galiba 😅