‘Sanduichito’ – noun, is a Spanish appropriation of the English word ‘Sandwich’.
‘Sanduich’ is sometimes used, but Latin Americans often add the diminutive ‘Ito’, meaning little, on to the end of words to make them more gentle or familiar.
In Argentine Tango the concept is obvious. One partner sandwiches a foot of the other partner between two feet. The action can be done at a speed suitable to the couple’s musical interpretation, and may include a ‘Parada’, a stop.