Of TV discussion show audience: to vigorously (even wrathfully) clap two opposite viewpoints one after the other, without apparently realising the contradiction. Example: A tremenous bi-clap issued from the benches. They clearly wanted blood, and didn't mind whose.
BI-CLAP
Meaning of BI-CLAP in English
Slang English vocab. Английский сленговый словарь. 2012