Platatudanous 

to be very dull or boring as fuck

That girl is very platatudanouse in bed. lol

Platatudanous by Eugene Brunt March 6, 2009

Platitudinous 

used on Spongebob,
means lame or boring!

"Do your friends call you dull? How about Boring? Don't forget Platitudinous!"

Platitudinous by mpmTM May 22, 2009