Ok, he has arms. But where are his legs?

Brown haired Jake wants to know the location of his legs, as they are not under his torso

Jake cannot find his legs.

Jake had his entire bottom half cut off, and is screaming.

jake has been cut in half and is screaming, while dirk says "yumm"

Caliborn's self portrait before he found the manga book.

caliborn being his usual self

literal trash

dave strider with the words "actual garbage" beside his face