I've always found this to be crazy. I've spoken to Singaporean friends (who are all younger generation) and some of them didn't even realize male homosexuality was technically illegal in Singapore. I find it mind-boggling how many archaic English laws are still in place in Singapore that they won't get rid of (some of which aren't even much enforced anymore).
This is probably nothing to worry about. There are tons of archaic laws all over the world, which no one really cares about , but which still exist.
-- Sex toys are banned in some states, such as Alabama.
-- Sexual intercourse between unmarried couples is illegal in Georgia.
-- Flirting is banned in San Antonio, Texas.
-- Oral sex is banned in Indiana.
-- Anal intercourse is banned in Cincinnati, Ohio.
-- Sexual positions beyond missionary are illegal in Washington, D.C.
-- Sleeping naked is illegal in Minnesota.