soda jerk(n = noun.person) soda jerker - someone who works at a soda fountain;
is a kind of counterman, counterperson, counterwoman

   a person who serves soda, ice cream, similar foods from behind a soda fountain. [PJC]

baking soda, benzoate of soda, bicarbonate of soda, caustic soda, clean and jerk, club soda, cream soda, ice-cream soda, irish soda bread, jerk, jerk off, knee jerk, knee jerk liberal, knee jerk reaction, orange soda, sal soda, salsola soda, scotch and soda, soda, soda ash, soda biscuit, soda bottle, soda bread, soda can, soda cracker, soda fountain, soda jerker, soda lime, soda niter, soda pop, soda water, washing soda