The acceptance of a male into a group of males. This usually involves the group getting together and boozing (preferably keeping female contact to a minimum). The warmers must ensure the warmer gets to a relatively high level of intoxication so as to ensure a proper temperature is gained.

Despite it's connertations a lad warming in no way involves and explicit contact between attendees.

No Bull Shit, and old hacker acronym which is usually used to signify that the talk will be serious.