The action of feeding someone booze well beyond their limit. Muldooning can produce various results, including but not limited to feelings of ecstasy, forgotten evenings, expensive cab rides, general dizziness, and corporal bruising/laceration.
"I got Muldooned last night, I don't even remember leaving the bar."
"Man, you were hitting on every girl in the bar last night, even the ugly ones. You totally got Muldooned"