If you wanna know
If he loves you so
It's in his kiss!
(That's where it is!)
A recent proposal by Wolter Seuntjens, a Dutch researcher in in chasmology (the science of yawn studies) suggested that yawning might indicate sexual interest. He proposed this based on reports that people yawned during sex or foreplay.
In DH Lawrence's novel Lady Chatterley is described as "stretching with the curious yawn of desire".
Therefore, don't necessarily take that sign wrong!
Sleepy, or . . . . "?