an adult that acts like a child, they usually have a dumb expression and are rejected by other people for being lazy
mandarle a la porra
mandulete
manganzón
mangar
1) to score something good 2) to have ocassional sex with a woman
mangonear
manopla
manos a la obra
manteca
mapiar
mapo
mapuchado
maquinilla
maquinón
marayojunda
marbete
marear el color
marica
a nickname used among girls