A slang term for being "lazy". It also relates to a negative connotation for African Americans. The word originates from the baseball player Lastings Milledge in reference to his attitude and behavior.
I was too tired to go to work today, so I stayed in bed, called my boss and took a lastings day.
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After a big lunch, I feel very lastings and try to sleep for an hour.
Thomas: Bro. you won't believe what happened to me last night, I was driving home and....
Gilbert: Yo you wanna hear a dead baby joke.
Thomas: Stfu and let me talk don't be a fucking lactating cow.
Lactating wombat is the term given to a short, round, aged and loud man that has no discernable good looks and bears the resemblance of a wombat. He has mild erectile dysfunctions along with sore, tender nipples which leak prefusely.
"man, that guy just keeps talking, and look at the wet patches on his shirt!, he looks like a lactating wombat"