To send an email to the Lefsetz Letter music blog with an ulterior motive or to stir the pot.
Alternate definition: to send Lefsetz a tip to gain favour with music executives
Alternate definition 2: (male or female) corresponding with the Lefsetz Letter music blog in the hopes attaining Holy Grail: getting "email of the day" status and subsequently getting laid, really well laid.
I am so Lefsetzing that youtube video to Bob's blog.
You should be Lefsetzing that comment, maybe the head of EMI will see it and sign our band!
If that Lefsetzing of mine gets published, Amanda Palmer is gonna lick my armpits. Woot!