ruthless / strong (e.g. of wine) / (loanword) cool / hip
酷
=
告
+
酉
:
Karl Koala (ku) got a new cool (酷) LED panel (告) to wake him up in the morning in the space station's bathroom (Ø4). The rooster (酉) thinks it is so cruel (酷) because to wake up Karl was his favorite activity.