Description: Attacking the person making the argument, rather than the argument itself, when the attack on the person is completely irrelevant to the argument the person is making.
Logical Form:
Person 1 is claiming Y.
Person 1 is a moron.
Therefore, Y is not true.
Example #1:
My opponent suggests that lowering taxes will be a good idea -- this is coming from a woman who eats a pint of Ben and Jerry’s each night!
https://www.logicallyfallacious.com/tools/lp/Bo/LogicalFallacies/1/Ad-Hominem-Abusive
* can you guess which part of this construct is missing from my post, which you called an ad hom?
good luck!