An improved name for the Flamin' Hot Cheetos snack. As you may guess, they are very cheesy and often quite hot, as evidenced by their orangish-red color. In the process of eating these crunchy bites of spicyness, your hands and/or lips will become quite red despite your best efforts.
Lester: What're you munchin' on there?
Chester: My snack-size bag of cheesin' hot flamos
Kind of like gaydar except instead of being able to tell if somebody is gay, straidar tells you that he/she straight even if he/she acts, looks, or talks as though he/she is gay.
It's the Heterosexual spidey-sense
Bob: Dude it seems like every time i'm near you my gaydar goes of the charts.
Rob: Don't worry Bob that's probably just your straidar.