pound the table

pound the table (third-person singular simple present pounds the table, present participle pounding the table, simple past and past participle pounded the table)

1. Used other than figuratively or idiomatically: see pound,‎ the,‎ table.
2. (figuratively) To vehemently assert one's position.
3. (figuratively, law) To base an argument on bluster or rhetoric when unsupported by more substantive elements.

   There's an old legal aphorism that goes, "If you have the facts on your side, pound the facts. If you have the law on your side, pound the law. If you have neither on your side, pound the table."

4. (finance) To promote one's products.

• tubthumping