of course you're allowed to not block. for example, some sucker sets you up for an icing, and he doesn't know better than to use a Mule, you just knock back the tasty Mule, and know you've got a super incognito blocking in tow for when somebody tries to ice you with something not so delicious
I was at a charity poker room last night. The night was winding down and the news was on. I kid you not, they had a national news story about the new trend of "icing bros." I was embarrassed that I knew what they were talking about.
Was eating pizza at a local restaurant last night while watching the game, and I witnessed an icing.
Group of bros are watching the game, and one has a waiter ice one of the bros. Bro declines and I almost go up to him and let him know that's not cool, but they put it in the chair of a bro who is in the bathroom and put a menu over it. I don't think the decliner knew what the game was about and thought he was too cool for it.
The bathroom bro does not decline but he doesn't get on one knee in the floor, he gets on one knee in the chair.
All very funny considering I told my wife about the game on Wednesday night and we got to see one happen the next night.
"To summarize, you need to go buy Smirnoff Ice just TO PROTECT YOURSELF FROM SMIRNOFF ICE, and we will all live in a state of constant fear for the foreseeable future," wrote Urlesque author Will Zweigart.