NL50 - Flop a set OOP, but w/ ridiculous board, players, and action

[rdrr]

Both villains were running VPIP at 45-50 over the 60ish hands i've played at the table and just seemed generally terrible. The only previous hands I'd played with them typically involved them limp/calling and instafolding to my cbets repeatedly.

With that said, would this action scare anybody else, or am I still nittier than I think (I've been working on this recently)?

Poker Stars - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 9 Players - (LegoPoker HH Converter)

Hero (SB): $67.60
BB: $39.60
UTG: $152.80
UTG+1: $85.35
MP1: $48.25
MP2: $50.00
MP3: $84.25
CO: $14.90
BTN: $26.50

Preflop: Hero is dealt 7[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/club.gif[/img] (9 Players)
4 folds, MP3 calls $0.50, 2 folds, Hero calls $0.25, BB checks

Flop: ($1.50) 6[img]/images/graemlins/heart.gif[/img] 7[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] (3 Players)
<font color="red">Hero bets $1.50</font>, <font color="red">BB raises to $3.00</font>, <font color="red">MP3 raises to $4.50</font>, WTF?