Slow rolling in poker is considered bad manors
What is a poker slow roll?In it's basic sense it is when a player waits until the very last moment before showing the winning hand. It's often done intentionally to get under the skin of your opponent but is considered very bad form.
How are hands meant to be sown downIn a poker game the sequence in which a poker hand is meant to go to showdown is as follows. Whoever initiated the final bet has to show his hand down first so that the players that called his bet can see his hand before showing theirs. Hence the term "I'll see you" which means you would be calling to 'see' if your opponent has it, if he was bluffing or just calling to 'see' if your hand is better.
Why is slow rolling bad?Although it can be argued that slow rolling in poker could be tactically used to annoy your opponent in an attempt to put them on tilt, it is just generally considered rude, bad manors and is generally frowned on. There is no specific rule against slow rolling in poker and even if some poker rooms do not permit it, it's a rule that never carries a penalty, maybe just a word of caution about poker etiquette.
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Do not confuse a poker slow roll with a slow play. Slow playing is a legitimate poker tactic that when used in the right situations can be a very profitable tool. Read my article to find out more about slow playing and how it's a brilliant weapon although often misused by newer players.