Is it okay to masturbate with phimosis?

OK: But can be uncomfortable & beware tight phimotic ring of foreskin pulling over the glans & getting stuck. This can result in paraphimosis. In which case foreskin gets swollen & retraction is very difficult or impossible. This constitutes a urologic emergency. Thus recommend treatment by prescription strength steroid cream oe circumcision.

Yes, but ...: Yes, you may do it but make sure to pull foreskin down to return and cover the plans penis if your foreskin is retractable; otherwise, so-called paraphimosis (severe circumferential swelling of foreskin above glans penis) may develop, which requires emergent attention to reduce it timely. So, do it but beware; enjoy and control life. Best wish ...