Ah, the “updog” joke. This has been around long before texting was even a thing. You ask a person to look at “updog” or check out the “updog” or something of that nature. When they ask “what’s updog?” you reply by saying something to the effect of “not much, how about you?”
Moms and dads all over the world, please prepare yourselves for the updog joke. At one point in time, your ungrateful crotch spawns will try to pull this joke on you. When they do, just say “it looks like ligma.” When they ask what ligma is, you can say ligma [something that you lick]. Gets them every time.