SNOWBALLED
Verb
snowballed
simple past tense and past participle of snowball
Source: Wiktionary
SNOWBALL
Snow"ball`, n.
1. A round mass of snow pressed or roller together, or anything
resembling such a mass.
2. (Bot.)
Definition: The Guelder-rose. Snowball tree (Bot.), the Guelder-rose.
Snow"ball`, v. t. [imp. & p. p. Snowballed; p. pr. & vb. n.
Snowballing.]
Definition: To pelt with snowballs; to throw snowballs at.
Snow"ball`, v. i.
Definition: To throw snowballs.
Source: Webster’s Unabridged Dictionary 1913 Edition