Looking for a stranger's trouble is teasing the person with humor. Use the technique called EARTHics which is found in WooTalks book. Link: www.shop.wetclef.com/shop/wootalks
Example of a simple situational opener is:
You are in a car and a lady is next to you at the back seat with bottle water. Start a conversation with the bottled water as an ice-breaker.
You: You forgot to buy bottled water for me. So, you're this stingy like Buhari.
Her: Hahahahaha. No o. Sorry.
You: You don't need to be sorry, stingy girl. (Change topic, if you wish, to anything current).
You: Have you gotten your PVC?
Tease her and make fun of her for not having it.
For a better understanding, read WooTalks.