Desperate is Spelled S-P-E-I-D-I

4/21/2008 1:45 PM PDT BY TMZ STAFF
Hold on to your breakfast. The two most shameless twits on planet Earth are at it again.

Spencer Pratt caused seizures on Robertson this weekend -- blasting Heidi Montag's "music" from his car as he waited to pick up his fame-hungry girlfriend from Kitson. We asked Spencer if he actually enjoyed the song ... but if he said anything, it couldn't be heard over the shrieking.