ational ▁duty ▁when ▁air men ▁could ▁not ▁be ▁re called ▁for ▁oper ational ▁flying . Sc uff ers ▁- ▁R AF ▁Police ▁( they ▁sc uff ▁their ▁bo ots ). Sc ree ch ▁- ▁Cit rus ▁Lem on ade ▁drink ▁made ▁from ▁a ▁pow der ▁or ▁small ▁cry st als ▁included ▁in ▁Com po ▁r ations . ▁ ▁Other ▁flav ours ▁were ▁also ▁available ▁but ▁not ▁quite ▁as ▁s our ▁or ▁har sh , ▁( all ▁were ▁still ▁referred ▁to ▁as ▁Sc ree ch ). ▁ ▁( So ▁named ▁from ▁the ▁severe ▁invol unt ary ▁reaction ▁of ▁the ▁mouth ▁and ▁face ▁pu ck ering ▁up , ▁or ▁the ▁high ▁pitch ed ▁' sc ree ch ing ' ▁noise ▁made ▁immediately ▁after ▁consumption ). S cri b ble y ▁- ▁Administration ▁personnel , ▁also ▁known ▁as ▁a ▁" Sh ine y " ▁or ▁" P enc il ▁P ush er ". Second ▁Dic key ▁- ▁Co - p il ot ▁in ▁on ▁board ▁training . S EN GO ▁( ab bre viation ) ▁- ▁Senior ▁E NG ine ering ▁Officer . ▁( A ▁design ation ▁that ' s ▁usually ▁only ▁applicable ▁to ▁the ▁senior ▁engineering ▁officer ▁of ▁an ▁actual ▁flying ▁squad ron ▁or ▁independent ▁flight ). S en ior ▁S cribe ▁- ▁N CO ▁in ▁charge ▁of ▁order ly ▁room . Sh ed ▁- ▁H ang ar . Sh ed ded ▁- ▁Dr unk . Sh ed de y ▁- ▁A ircraft ▁tr ades man ▁employed ▁on ▁second ▁line ▁aircraft ▁serv icing . S