A phrase that an asshole of a teacher uses when they catch a student texting with their phone hiding in their bag. This said teacher can normally be found teaching Chemistry.
Mr. Halliday took away my phone because he caught me “phone-bagging”
I only phone-bag because all the teacher does is talk about how we should drop out
Quite often is mistakened for phone "sex" but in actuality, it is just simply conversing on the telephone. However, it is more appropiately used with the opposite sex. boyfriend/girlfriend type of deal, or vice versa.
"Me and my girl were phone banging until midnight before she got sleepy and went to bed."