Contagious reflex (4)
I believe the answer is:
yawn
(Other definitions for yawn that I've seen before include "Show one is tired or bored" , "Mouth-stretching" , "Gape in tiredness" , "Bore" , "Sleepy gape" .)
I believe the answer is:
yawn
(Other definitions for yawn that I've seen before include "Show one is tired or bored" , "Mouth-stretching" , "Gape in tiredness" , "Bore" , "Sleepy gape" .)