Consuming excessive amounts of alcohol to the extent that everything you say is highly offensive.
Neil : "Mate, you was so moosed last night. You told your father-in-law that you fuck his daughter every night in his house!"
Paul : "Shit man, I hate getting moosed!"
While engaging in intercourse from behind, placing one's thumbs against one's temples and then vigorously wiggling one's fingers in a Bullwinklish manner.
"I moosed threechicks last night."
"Last night I got moosed again by that bastard!!"