Is it ok to beat off homeless people if they're on Ecstasy?

I'm asking because a friend said people on ecstasy like sexual contact. I pass by many homeless guys on my way to school everyday and would like to do something nice for them.

Also: my friend would not lie.

: http://alcoholdrugstreatment.info/is-it-ok-to-beat-off-homeless-people-if-theyre-on-ecstasy