Today's slang lesson!  
There has been a trend to finish a word with "っ" (we call it as 小さい”つ”?chiisai "tsu") =small "つ”(=tsu)

* 眠い=ねむい=nemui (sleepy) →ねむっ!(nemú) 

Like it or not, you will see or hear this everywhere in Japan now. 
(There is a TV show called 「お試しかっ!」(=Otameshiká) as well!)

Other examples :

* 暑い/熱い=あつい=atsui (hot)=あつっ!(Atsú) 

* うまい=umai (delicious)=うまっ!(Umá) 

* 早い=はやい=hayai (fast)=早っ!or はやっ!(Hayá) 

*遅い=おそい=osoi (slow) =遅っ! or おそっ!(Osó) 

*でかい=dekai (big) =でかっ! (Deká) 

*きもい=kimoi (disgusting) =きもっ! (Kimó) 

*辛い=karai (spicy ) =からっ! (Kará) 

What do you think about my Twitpic Lessons?

すごっ!Sugó(←すごい=Sugoi)