under the guys of

Outwardly appearing to be merely something dat presumably would be virtuous and socially acceptable, but is actually for da purpose of facilitating/satisfying a basic male-human desire of da "caring laborer", such as to get a hot looker to spread her legs for him and/or allow him to touch her boobs/butt.

There's a good chance dat a cute chick will get naked and allow you eager-hands access to her warm sumptuous softness if you approach her under the guys of offering her a free massage.