Referring to any action performed with covert intent.

What eastern europeans with accents refer to as alchohol, drugs, or other sketchy substances they are selling.

A reverse photobomb, sneaking a snapshot of a celebrity while pretending to shoot a selfie.

when you are with you're loved one
and you get a bit frisky you are being sneaky sneaky!!

Something done quietly behind friends backs as to not be embarassed later

Being able to get out of a pointless pep rally or band rehearsal without some fat ass teacher finding you and giving you 300 detentions.

A person that does, things behind there friends so they won't get hurt