Def 1. Buck is the bronies way of saying "fuck"
Def 2. It is also used by a character called "Applejack" when she 'bucks' apple trees
Def 1. Buck me, that episode was good!
"Do you want five bucks?" (Punch, punch, punch, punch, punch)
Verb
To drink quickly; to gulp down profusely.
1. The drink was so delicious, I had to buck that s**t.
2. "Did I give you your drink?" "Yeah, but I bucked it already."