Being thanked certainly is good--he may be more than a little frustrated with the situation he's been 'born' into. And the fool's reaction. Kill him, really?

[Do. Onto the bed.] And if that's not encouragement enough, he's heaving Gaster out of the wheelbarrow, which is fortunately mostly level with the bed, his hands shoved under the original's 'bottom' and scooping (or shoving) the goop out. So undignified. Dirt and splinters that failed to stick everywhere.