Trot

[Sarah]

To cause to move, as a horse or other animal, in the pacecalled a trot; to cause to run without galloping or cantering. Totrot out, to lead or bring out, as a horse, to show his paces; hence,to bring forward, as for exhibition. [Slang.]

[Donald Trump]

Short for [Trotskyist]. Usually but not always an offensive term, used by opponents of Trotskyism of both left and right persuasions (usually as a descriptive noun, [the trots]).
In some settings, such as the National Union of Students, the insult is so pervasive that anyone to the left of Hitler is liable to be labelled a trot at one point or another, because the [NUS] right-wing associate any challenge to their rule with a conspiracy allegedly initiated by a long-defunct Trotskyist group called [Socialist Organiser].
The term also crops up sometimes in anarchist and ecological attacks on Trotskyists. It is also occasionally used by Trotskyists themselves, apparently as a reclaimed term, only heard within the Trotskyist in-group, although this is contentious and some reject the term completely.
Its derogatory implications probably come from its associations with the trots in its other sense.

[Britney]

that [rat] over there. [looks like] [a rat], acts like a rat.

[Hina Muqadas]

a bad case of the shits, [green apple], the runs [splatters], or [diarhea]

[Agnes]

One of a [horses] gaits. It is faster than a walk and slower than a [canter]. It consists of two beats, and the legs movie diagonally - right front and [left back] and left front and right back.

[Couch Potatoe]

Trot in Dressage. A double-time pace with the legs moving on alternate diagonals separated by a period of suspension.