Good aggressive regs. who are constantly putting you to a decision.
Rookie players who aren't aware of hand ranges, position, etc. etc.... often playing in a manner which is repping a good hand... because they are actually thinking in that particular spot they are ahead... but in reality they are a Level 1 thinker and aren't even considering what range of hands you would have in this particular spot.
ie. you're sitting with Top2 pair on flop... with position. Villain fires sizable C-Bet, you call... Turn > villain leads out with another large bet.... river comes what would appear to be a blank.... Villain overshoves pot 'all-in' for stacks (or a significant portion of your stack)... leading to one's thinking "WTF?!?!?!"
You make what you think could only be a hero call (Villain hasn't been out of line
bluffing prior to this hand).. and Villain turns over Top pair hand. WTF?
Many other plays with over-valuing hand strength for particular situation....
ie. Villain with position... betting river when checked too with a hand with decent showdown value (but never a hand you'd be betting for value given how the hand has played out and the particular circumstances/situation).
Trying to get into the heads of players when it's difficult to do because the player doesn't even know what they're doing either.
I don't think 'scared' is the correct description of the feeling though. (why be scared?)
