► 副詞むらむら  [(1)むらむら]    
meaning:  rise  rank: 3☆ 
怒りがむらむらと
込み上げて
来た ⇨ Anger started to well up inside me  
(☛ Feelings, typically anger or lust, to swell up slowly)むらむら  [(1)むらむら]    
meaning:  sex  rank: 3☆ 
彼女の
水着姿を
見ていたら
ムラムラ来た ⇨ I saw her in a swimsuit and got very horny  
(☛ Usually from a man’s perspective)