The shorty is a muppet who miniraises about 25% of his hands preflop.

Dealt to Hero
eripmav folds.
WYBUTCH folds.
timmodogg calls [$0.25].
LooseGoose80 folds.
AmmonW calls [$0.25].
Hero calls [$0.15].
Viking36 raises [$0.25].
timmodogg calls [$0.25].
AmmonW calls [$0.25].
Hero calls [$0.25]

** Dealing Flop **
Hero bets [$1.90].
Viking36 is all-In.
timmodogg folds.
AmmonW calls [$3.96].
Hero raises [$15.84].

When AmmonW just flat calls I figure he most likely has a draw. Could he have middle set? Anyway, is it correct to try and get him out when my holding is so marginal? I usually don't play bottom set this strong (actually, I usually just check/fold it).