A speedbooster is a word used to describe the scum within the NBA 2K community that abuse dribble move animations to gain a speed advantage over their opponent. Speedboosters make up the majority of the highest ranked people in the NBA 2k MyPark, for their lack of actual basketball IQ gives them a competitive edge.
A Speedmod is a modifier in several music games like In The Groove, Beatmania, Dance Dance Revolution or O2Jam. A lot of Speedmods look like "x3" or "x 2.5".
When you play a song the notes of the songs will be displayed according to the BPM of the song (Beats per minute).
After you used a Speedmod the scrolling speed of the displayed notes will increase or decrease, but it won't change the BPM of the song.
Many players are using Speedmods to increase their playing skill and timing.
The garment infamous paedophile Rolf Harris wore when promoting the “Teach Them To Swim” campaign in the 1970s. While he was more likely cruising for vulnerable young victims at the local pool.