He should let her finish first

Kazex sat down to watch her continue going to town on herself. He then got his dick out and started jacking off.

The female kept pleasuring her and moaning and wishing she had a real dick inside her. Pretty soon she screamed as she came thrashing her pelvis upwards and juices gushing from her pussy. She then collapsed on the ground spent. But soon she got up and then spotted Kazex still jerking his dick. Now he was too deep into his masturbation to notice someone was watching him.