I thought that maybe another language would have a word for this, and I found
https://spanishto-english.com/spanish-dictionary/haraganear
It calls "being lazy" an intransitive verb
Re:Why Am I So Lazy?
by thomastjeffery on Sunday January 07, 2018 @01:49PM
(#16092004)
Lazy is an attribute.
"Being lazy" is a transient state.
That's the important distinction here.
"Stop slacking" might be better; it unambiguously refers to current behavior that a person can change immediately.