I'm currently rebuilding my roll at $50NL on Tribeca and have noticed some strange plays - namely open pushing all in with the nuts/strong hands.

Example 1.

I was on the BB with 52.
2 players limp, Sb completed and I checked.
Flop came down 952.
1st to act he pushes $20 all-in into about a $2 pot.
I guess I should fold here as I thought theres a good chance he has 95 or 92 and also there are 2 players left to act after me who could have flopped a set but I call anyway. He shows down 95.

Example 2.

I am on BB with T6
About 5-6 people see the flop of T96 rainbow.
SB open pushes $20 into a $3 pot.
I think I am not falling for this shit again and fold.
Shortstack with $5 left calls and the guy had actually shoved 78.

Is this common at $50NL/Tribeca or have I just ran into a few wierdos?