Artist's commentary
Thicc Mura-Mura https://t.co/u88Km9GMdJ
It says "Mura-Mura", but there's a visual pun with the text here. ら looks like ち very slightly, and in the moment, one could easily misread "Mura-Mura" as "Muchi-Muchi" (thick/plump/voluptuous). This is... clearly intentional. The puns don't end there, either! Mura-Mura itself can mean "oncoming anger" (her expression) or "sexual arousal" (ahem)