Reihe 10
From TowersStreet Wiki
When a member has consumed a lot of food and is feeling very much full-up, you may hear them exclaim "Reihe ZEHN, bitte!" This particular meme originates at Europa Park and refers to Blue Fire, where the back row (row 10) of the train is simultaneously the best seat and the 'big boy seat', for those larger riders, implying that they feel fat enough after eating to be eligible for row 10 of the ride.
You may also find certain members exaggerating their beer-bellies when at the front of the Blue Fire queue, to try and persuade/seduce the batching host to let them ride on the back row. This is often followed by a glance up and down the members' bodies and a quick 'Ja, Reihe zehn.'