What does :/ stand for?

:/ stands for "Can't keep his mouth shut"

How to abbreviate "Can't keep his mouth shut"?

"Can't keep his mouth shut" can be abbreviated as :/

What is the meaning of :/ abbreviation?

The meaning of :/ abbreviation is "Can't keep his mouth shut"

What does :/ mean?

:/ as abbreviation means "Can't keep his mouth shut"