MDBG is such an unexpected source of amusement

well, I guess it's just the construction of slang itself; language can be so awesome sometimes

灵光

líng​guāng​

divine light (around the Buddha) / a halo / a miraculous column of light / (slang) jolly good!

断背

duàn​bèi​

homosexual; fag (slang, referring to Ang Lee's "Brokeback Mountain")

打炮

dǎ​pào​

to open fire with artillery / to make one's stage debut / (slang) to ejaculate

电灯泡

diàn​dēng​pào​

light bulb / (slang) unwanted third guest

怪叔叔

guài​shū​shu​

queer uncle, referring to a young to middle-aged male pedophile (Internet slang)

维他命Ｂ

wéi​tā​mìng​ B

Vitamin B / boyfriend (slang)

神女

shén​nǚ​

goddess / 1934 silent film about the life of a Shanghai prostitute (directed by Wu Yonggang 吴永刚) / prostitute (slang)

打飞机	dǎ​fēi​jī ​		to masturbate (slang)