At the end of the Opening for Tonari no Seki-Kun, Seki holds up a microphone to Rumi, at which point she says to the rhythm of the music something like "Yama tay!". No translation is presented. What did she say?
It is a cute OP. During it, Seki is developing an animation that includes both Rumi and himself. (IMO this is essentially a very funny yet fitting meta commentary on the series.) You see him with what is probably a character summary of Rumi, and soon after he hands her a notebook. It has a title in Japanese, but, again, it is not translated.