Rainbow sour straws tropical thunder Shortfill 100ml E-Liquid by Bazooka If you're searching for an e-liquid that has a little bit of everything, Rainbow Sour Straws Tropical Thunder by Bazooka is the one for you. This e-liquid is a delicious assortment of your favourite fruit flavours, and it sets off the sweetness of those flavours perfectly with the addition of a nice sour edge.The mix is 70% VG / 30% PG.