调情
talking to someone that you find sexually attractive in the hope of having sex with them
Look at him over there on the chirpse. 看他在那儿和人调情。
If you're on the chirpse, I'd recommend a smart shirt.
Sometimes, when you're on the chirpse with a guy or girl, you suddenly stop liking them.
Apparently they were on the chirpse by tweeting each other before they actually met.
That is definitely not the kind of vibe you want to be giving off when on the chirpse.
See also: chirpse noun