As a believers I believed in these
The Roman Catholic church encourages sexual abstinence and fidelity to prevent the disease from spreading.
to those non-believers you can use condoms as long as it is safe,check it properly before using it
to make my explanation short..
self pleasure(all by ourself)for single only, is the safest way for us believers..
for married person..(only your wife/husband)
to those SEX MANIAC non believer..use double or triple condom
or buy some sex dolls/dildo! ...or try to insert your dick at the elevator/lift entrance then close it!hahahaha