A E I O U and sometimes Y

Alb: I sht down my computer
Completely for the first time
Me: sht?!
shit or shot
(cuz they are verrrry different)
Alb: Shut....
Me: oh
HAHHAHAHHA

And no, at the moment, "shut" didn't come to my mind at all.
How despairing!  I only had six letters to choose from too... shyt!