Going After The Table Jackass,

[Nightlight87]

Total pot of $66 with $49.50 to call. So your pot odds are 1:1.33, 44%~.

You have 9 outs to a flush, 3 outs to aces, 2 outs to kings (Ks is counted in flush outs). Total of 14 outs.

Chance of improving = 14/47 + (33/47)*(14/46) = 51%~

Even against a tight range assuming he is pushing 99+, 44, and AQ+ you have 58% equity so I'd probably call here against a normal tight player, against a maniac like this I call all the time.

Text results appended to pokerstove.txt

142,560 games 0.047 secs 3,033,191 games/sec

Board: Ts 9s 4s
Dead:

equity win tie pots won pots tied
Hand 0: 58.165% 51.74% 06.42% 73767 9153.00 { AsKc, AsKd, AsKh }
Hand 1: 41.835% 35.41% 06.42% 50487 9153.00 { 99+, 44, AQs+, AQo+ }