When a girl is DTF(down to fuck) but will go farther and is kind of a freak so you say she is down to mash. mash being something crazy freaky. the mash is when a girl is down to let you make mash potato's inside of her then pour it out or eat it out of her directly and eat it. bacon bits and chives are optional
Will P: Dude, I think im gonna date Maria. Its awesome shes DTF.
Will N: Yeah well Sophia is Down to Mash(DTM) so i think i got you beat