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1.
when you stimulate someone's armpit for sexual pleasure using your tongue
* make sure they use deodorant and trim the hair
marc loves giving and receiving armpit jobs on saturday nights

if you give someone an armpit job without their consent it's considered sexual harassment/bullying

i love armpit jobs they're so hott
by spidermarc June 29, 2008
 
2.
When a woman's underarm surpasses her vaginal integrity to the point that it becomes her primary means of giving pleasure.
"Hey dude, did you bang that waitress? Tell me you at least got an Armpit Job"
"Yeah man I fucked her armpit. I came in seconds."
by thevagbrothers September 30, 2013