When somebody thinks they're about to outsmart you and you encourage them to keep going, knowing you have a fact ready to completely humiliate them.
Mitt Romney: "You said in the Rose Garden the day after the attack, it was an act of terror... is that what you're saying?
Barack Obama: "Please proceed, Governor"
...
Romney humiliated by debate moderator
To continue a night of drinking even though the bars are closing. Usually involves a 3am gram of coke and a late night liquor store run. There is no reason for doing this. You will not get laid. You will not feel better about your self but you will do it anyway.