During an investigation in Ireland for whether there is any truth in the myth of leprechauns, the team get's a tip about using a pint of Guiness, which is one part suggested as a offering, and one part, tongue in cheek suggested they drink it, as it may help with "seeing" (Read: hallucinate) them. Also while fact finding, the team learns of a pub that claims to have leprechaun bonesnote Latter disproven by an Animal biologist, who upon looking at photos sent to him from the team, confirming they were chicken bones from the wings served there. on display there. While there, they decide to "test" the Guiness theory. You can see the grin on Josh's face at how he's going to be able to list this expense to the production company and SyFy.
Josh: "Alright everyone. We've been told if we drink Guiness, we will have a better chance at seeing a leprechaun. Ok, so this is important scientific research.
*Later on* Josh: Another round of "research"!
*Latter still, cue a shot of the research team having passed out from said "research", and many empty glasses on the table.*