Update
Updating database... Please wait.
Monday 27 November 2017 at 02:56
If the straw is kinked then I say 2, but if its a passable then 1! For me its a hydraulic system, fluid only moves one way it's pushed...you must be water flow like water whhhhhaaaaaa (Lee) lol!
51xA6sRHhCL._UL1001_.jpg
Source: http://pinside.com/pinball/forum/topic/does-a-straw-have-one-hole-or-two-holes-poll-included/page/2#post-4093369