REITS - like a long term wife. long term benefit. keep and hold but you can't continue being admire after long.

blue chip stocks - like super model. hot and beautiful. nice to hold. but risky. highest chance to lose and gain.

penny stocks - college girls (ace market) that you invest hoping that they will be mature and elegant (profit) when they venturing into the corporate world (main market)

yup. above sums up by a friend of mine who try to relate relationship into stock market.