Underdogging 

Siding with the underdog in a situation or debate simply because they are the underdog and regardless of whether or not you agree with them.

This term originates from the book 'Generation X' by Douglas Coupland.

Underdog: Abortions should be illegal.
Person A: Yeh I totally agree.
Person B: Hey man, quit underdogging!

Underdogging by Alice842 March 25, 2011

Underdogging 

(A sexual act) taking place during Doggy Style, when the receiving party reaches from underneath to finger the other person.

Person1: “have you tried underdogging?”

Person2: “No I have not. Should I?”

Underdogging by Cornblower19666 June 23, 2023