When you first open a bottle of soda or seltzer or pop, begin by slowly turning the cap one-quarter turn and wait about 10 seconds, watching for the small bubbles to slow down, and listening as the sssst of escaping gas gets quieter. Then turn another 1/4 turn, and wait another 10 seconds till it quiets down. Now open the cap the rest of the way, and look proudly around as you pour a perfect cup. Don't expect a pat on the back, though, because nobody will realize what didn't happen. But you'll know.
Because one day, soon we hope, you'll be at a shul kiddush, balancing a full bowl of aromatic chulent or chili or Hungarian goulash in one hand, and an empty cup in the other, and someone will offer to pour you a drink, and he'll twist that cap quickly, in one fell swoop, and you'll watch as the bottle suddenly erupts, and fizzy, bubbly liquid streams downward, over his greasy hands into your still-untouched chulent or chili or Hungarian goulash, filling the bowl with what now looks like brown soup, which overflows the rim and drips downwards onto your Shabbos shoes, and you'll look up as he sheepishly mumbles "Sorry! Someone must have shaken the bottle" and you'll think NO, YOU DOOFUS!!! DON'T BLAME SOMEONE ELSE! ADMIT THAT YOU DON'T KNOW HOW TO OPEN A BOTTLE OF SODA! but you won't say that, of course, you'll just smile kindly and say "It's nothing, I'll get another bowl" and you'll return to the table, only to discover that the pan has now been totally emptied of its chulent or chili or Hungarian goulash, and you'll just sigh. How could he know? He's not a DDFer.