I know quiet a few players who have never found a 5-M that was too weak to open in 3rd seat white vs red. Also, 2h by p 2s by you with not more than xxx in s is so old it has a beard. They are not systemic bids but are meant to get in the way of the opponents. Watch your vulnerability. Playing KS back in the days when it was legal to use systemic psyches they were not a very good bet with about a 30% score expected but it kept the os on their toes. The other is the lead avoidance psyche. Say that your p opens 1h and you hold qxs, xh, and ajxxxd, kjxxxc. 3n might be a good bet if the lead is right and you might scare them off with s bid into the s bidder lead.