Similar to retard' except Mexican.
An insult which can be used to point out their gross and vile nature. They talk the talk, twitch and stink of sweat whilst trying to offload low calibre dope.
They usually have a low opinion of women in general and grow mustaches like their mothers.
'These Mexitard's are soooo dumb!'
'No shit man he was a Mexitard who stole it!'
'That Mexitard tool was so stupid he left his stash!'