Definition 1 of 1
If a boy asks a girl if she would like a cool drink, it can be assumed that the boy is wanting to put kai. If the girl agrees, it can be assumed that he will succeed. Best way to kadde a boy is to go for cool drinks, make him pay and then leave with friends by auto.
Due to this connection between cool drinks and putting kai, having cool drinks can also be used as a euphemism for the kai putting.
Ravi: no Appa, I was there.
Appa: Don't lie, Prof. Lakshmipathy told me you were absent. What were you doing, having cool drinks with that Lakshmi again?