Method to drink more

[Hybrid_11]

so ill be at the bar tomorrow night with a group to celebrate a girls 21st, anyway 2 of the girls are claiming now that they will be able to drink more than me, bare in mind i have a decent tolerance and one of these girls may weigh 100 lbs and is like 5'4". So this seems like an empty threat, but i found out their claiming this because apparently they heard a secret from a bartender of a way to be able to drink more, now im very skeptical with this, so i ask OOT if and what are ways to be able to drink/hold more alcohol in a night.

obviously were talking about something other than making yourself puke.