Deadline: Last night’s Sharknado 3: Oh Hell No! chomped its way to 2 billion Twitter impressions – doubling the 1B impressions for 2014’s Sharknado 2: The Second One. Syfy says with its orgy of bad effects, scenery chewing, campy cameos and corporate cross promotions generating more Twitter activity than every episode of the final season of Mad Men, every episode of this season’s The Bachelor and Hillary Clinton’s presidential announcement, Sharknado 3 trended No. 1 in the United States last night, and No. 2 worldwide.