MONTH - two index fingers. The passive hand is static, pointing upright. The dominant hand is sideway. The dominant hand go behind the passive hand and slide down it.
There are two way of doing CONDOM. One is similar to the above, but instead of the dominant index finger sliding down behind the passive index, it is infront of the passive index. The other is making an O-shape with the dominant hand, then sliding down the passive index finger (... like putting on a condom.)
Oh okay. Whew, I've been signing month right. souggy.