If the context is something like "Heard you got a new job - hfy", it'll be Happy For You. Without any information about the context you have seen it used, it's impossible to be sure.
The cast of Az ezredes - 1917 includes: Janka Csatay Claire Lotto Bela Lugosi Charles Puffy
it means brats and cool
A game, typically with an accumulating jackpot, in which participants play numbers of their choice in a random drawing.
you should play lotto
Twv means on lotto ticket
He means it's the night they are going to play lotto - unless lotto is some sort of secret code but most guys don't use secret codes
lotto
twenty five
20 dollars
It means you lose
Az te obicham means I love you