Dina Lohan is ready to roll heads, after learning from TMZ that her 14-year-old daughter had a casting call with a big-time, award winning porn director.

Ali Lohan's rep tells us the girl had no idea that Peter Davy was behind such classics as "Breast Wishes 14" and "Bun Busters 12." Sources tell us the meeting was actually set up by Ali's agent. Apparently, no one gave Dina a heads up -- pardon the expression.

Officially, Dina is upset. Unofficially, we know she went nuclear.

Source: TMZ