>>41429030
>>41429020
Lookup pearly papules and fordyce spots, those are normal bumps for a penis to have.
Now look up herpetic lesions, genital warts, syphilis sores, and molluscum.
Now that you know what these bumps look like do a visual inspection of their cock with your hands and eyes, and be ready to say no if they have a diseased cock.
get your shots for hep and all that, and use condoms if you aren't on prep.
Anons will be dramatic, but you can put condoms only as a tag on grindr and guys will wear them if it gets them bussy, so...