Similar to the words "crack" and "banter", can be used to represent an activity or talking.

Blag is word with multiple meaning. Fyee, ayyee, swaagg fuck. You just substitute the real word with blag

Something that means nothing. Much like blah. Often used when there is no real answer.

A bag that has been torn open along the side.

Basically when you make something up on the spot

Blag blahg

1. verb. To steal, acquire or achieve something through dubious means.

Comes from the old word "blackguard", a contemptible and untrustworthy person, which was pronounced "blaggard".

The sound of the last part "ard" became confused with the suffix "ard": meaning a person who does an action, as in drunkard. "Blag" becoming the contemptible untrustworthy action.

I first came across it as a teenager working on a building site nearly 50years ago, when an old Irishman accused another of "fucking blaggarding". I didn't know what it meant, but was obviously a bad thing to accuse someone of and not done lightly. These days it seems to have lost its former vehemence and is used more in the manner of petty criminals boasting of their offences.