A tedious service comedy, of interest only for a couple of off-color references ("punks" and "Go phhhhft yourself").
All the thoughts I can remember while watching Mandy:
1) Is this the movie that You Were Never Really Here ought to have been? Down with arty "significance," up with out-and-out genre exercises!
2) I assume Jeremiah simultaneously recalling Jeff Spicoli's evil twin and Buffalo Bill was purely intentional?
3) Red and Mandy's home life kept reminding me of Paterson and Laura, because of its off-kilter domesticity.
4) A heavy metal Orpheus braves the underworld and is rewarded by being reunited with his Eurydice (the bar scene being both Red and Mandy's original meeting and their reunion in the afterlife)?