吞
=
口
+
天
:
Tommy Turtle (tu) tried to swallow (吞) a whole mandarin (口) in front of the encampment ((e)n1) and is about to suffocate. Fortunately an angel (天) sees him struggling and rescues him.
吐
=
口
+
土
:
Tommy Turtle (tu) ate too many mandarins (口) in the space station. He can't help but vomit (吐) until he produced a muddy pile of mandarins (口) in the bathroom (Ø4).